21798420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 192

約数和(自身を含む): 76640256

約数和(自身を除く): 54841836

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 43, 51, 60, 68, 70, 71, 84, 85, 86, 102, 105, 119, 129, 140, 142, 170, 172, 204, 210, 213, 215, 238, 255, 258, 284, 301, 340, 355, 357, 420, 426, 430, 476, 497, 510, 516, 595, 602, 645, 710, 714, 731, 852, 860, 903, 994, 1020, 1065, 1190, 1204, 1207, 1290, 1420, 1428, 1462, 1491, 1505, 1785, 1806, 1988, 2130, 2193, 2380, 2414, 2485, 2580, 2924, 2982, 3010, 3053, 3570, 3612, 3621, 3655, 4260, 4386, 4515, 4828, 4970, 5117, 5964, 6020, 6035, 6106, 7140, 7242, 7310, 7455, 8449, 8772, 9030, 9159, 9940, 10234, 10965, 12070, 12212, 14484, 14620, 14910, 15265, 15351, 16898, 18060, 18105, 18318, 20468, 21371, 21930, 24140, 25347, 25585, 29820, 30530, 30702, 33796, 36210, 36636, 42245, 42742, 43860, 45795, 50694, 51170, 51901, 61060, 61404, 64113, 72420, 76755, 84490, 85484, 91590, 101388, 102340, 103802, 106855, 126735, 128226, 153510, 155703, 168980, 183180, 207604, 213710, 253470, 256452, 259505, 307020, 311406, 320565, 363307, 427420, 506940, 519010, 622812, 641130, 726614, 778515, 1038020, 1089921, 1282260, 1453228, 1557030, 1816535, 2179842, 3114060, 3633070, 4359684, 5449605, 7266140, 10899210, 21798420]

約数ペア:

[(1, 21798420), (2, 10899210), (3, 7266140), (4, 5449605), (5, 4359684), (6, 3633070), (7, 3114060), (10, 2179842), (12, 1816535), (14, 1557030), (15, 1453228), (17, 1282260), (20, 1089921), (21, 1038020), (28, 778515), (30, 726614), (34, 641130), (35, 622812), (42, 519010), (43, 506940), (51, 427420), (60, 363307), (68, 320565), (70, 311406), (71, 307020), (84, 259505), (85, 256452), (86, 253470), (102, 213710), (105, 207604), (119, 183180), (129, 168980), (140, 155703), (142, 153510), (170, 128226), (172, 126735), (204, 106855), (210, 103802), (213, 102340), (215, 101388), (238, 91590), (255, 85484), (258, 84490), (284, 76755), (301, 72420), (340, 64113), (355, 61404), (357, 61060), (420, 51901), (426, 51170), (430, 50694), (476, 45795), (497, 43860), (510, 42742), (516, 42245), (595, 36636), (602, 36210), (645, 33796), (710, 30702), (714, 30530), (731, 29820), (852, 25585), (860, 25347), (903, 24140), (994, 21930), (1020, 21371), (1065, 20468), (1190, 18318), (1204, 18105), (1207, 18060), (1290, 16898), (1420, 15351), (1428, 15265), (1462, 14910), (1491, 14620), (1505, 14484), (1785, 12212), (1806, 12070), (1988, 10965), (2130, 10234), (2193, 9940), (2380, 9159), (2414, 9030), (2485, 8772), (2580, 8449), (2924, 7455), (2982, 7310), (3010, 7242), (3053, 7140), (3570, 6106), (3612, 6035), (3621, 6020), (3655, 5964), (4260, 5117), (4386, 4970), (4515, 4828)]