21228240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:98

約数の個数: 240

約数和(自身を含む): 78369984

約数和(自身を除く): 57141744

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 43, 44, 48, 51, 55, 60, 66, 68, 80, 85, 86, 88, 102, 110, 120, 121, 129, 132, 136, 165, 170, 172, 176, 187, 204, 215, 220, 240, 242, 255, 258, 264, 272, 330, 340, 344, 363, 374, 408, 430, 440, 473, 484, 510, 516, 528, 561, 605, 645, 660, 680, 688, 726, 731, 748, 816, 860, 880, 935, 946, 968, 1020, 1032, 1122, 1210, 1290, 1320, 1360, 1419, 1452, 1462, 1496, 1720, 1815, 1870, 1892, 1936, 2040, 2057, 2064, 2193, 2244, 2365, 2420, 2580, 2640, 2805, 2838, 2904, 2924, 2992, 3440, 3630, 3655, 3740, 3784, 4080, 4114, 4386, 4488, 4730, 4840, 5160, 5203, 5610, 5676, 5808, 5848, 6171, 7095, 7260, 7310, 7480, 7568, 8041, 8228, 8772, 8976, 9460, 9680, 10285, 10320, 10406, 10965, 11220, 11352, 11696, 12342, 14190, 14520, 14620, 14960, 15609, 16082, 16456, 17544, 18920, 20570, 20812, 21930, 22440, 22704, 24123, 24684, 26015, 28380, 29040, 29240, 30855, 31218, 32164, 32912, 35088, 37840, 40205, 41140, 41624, 43860, 44880, 48246, 49368, 52030, 56760, 58480, 61710, 62436, 64328, 78045, 80410, 82280, 83248, 87720, 88451, 96492, 98736, 104060, 113520, 120615, 123420, 124872, 128656, 156090, 160820, 164560, 175440, 176902, 192984, 208120, 241230, 246840, 249744, 265353, 312180, 321640, 353804, 385968, 416240, 442255, 482460, 493680, 530706, 624360, 643280, 707608, 884510, 964920, 1061412, 1248720, 1326765, 1415216, 1769020, 1929840, 2122824, 2653530, 3538040, 4245648, 5307060, 7076080, 10614120, 21228240]

約数ペア:

[(1, 21228240), (2, 10614120), (3, 7076080), (4, 5307060), (5, 4245648), (6, 3538040), (8, 2653530), (10, 2122824), (11, 1929840), (12, 1769020), (15, 1415216), (16, 1326765), (17, 1248720), (20, 1061412), (22, 964920), (24, 884510), (30, 707608), (33, 643280), (34, 624360), (40, 530706), (43, 493680), (44, 482460), (48, 442255), (51, 416240), (55, 385968), (60, 353804), (66, 321640), (68, 312180), (80, 265353), (85, 249744), (86, 246840), (88, 241230), (102, 208120), (110, 192984), (120, 176902), (121, 175440), (129, 164560), (132, 160820), (136, 156090), (165, 128656), (170, 124872), (172, 123420), (176, 120615), (187, 113520), (204, 104060), (215, 98736), (220, 96492), (240, 88451), (242, 87720), (255, 83248), (258, 82280), (264, 80410), (272, 78045), (330, 64328), (340, 62436), (344, 61710), (363, 58480), (374, 56760), (408, 52030), (430, 49368), (440, 48246), (473, 44880), (484, 43860), (510, 41624), (516, 41140), (528, 40205), (561, 37840), (605, 35088), (645, 32912), (660, 32164), (680, 31218), (688, 30855), (726, 29240), (731, 29040), (748, 28380), (816, 26015), (860, 24684), (880, 24123), (935, 22704), (946, 22440), (968, 21930), (1020, 20812), (1032, 20570), (1122, 18920), (1210, 17544), (1290, 16456), (1320, 16082), (1360, 15609), (1419, 14960), (1452, 14620), (1462, 14520), (1496, 14190), (1720, 12342), (1815, 11696), (1870, 11352), (1892, 11220), (1936, 10965), (2040, 10406), (2057, 10320), (2064, 10285), (2193, 9680), (2244, 9460), (2365, 8976), (2420, 8772), (2580, 8228), (2640, 8041), (2805, 7568), (2838, 7480), (2904, 7310), (2924, 7260), (2992, 7095), (3440, 6171), (3630, 5848), (3655, 5808), (3740, 5676), (3784, 5610), (4080, 5203), (4114, 5160), (4386, 4840), (4488, 4730)]