21486720

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:91

約数の個数: 192

約数和(自身を含む): 74615040

約数和(自身を除く): 53128320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 31, 32, 38, 40, 48, 57, 60, 62, 64, 76, 80, 93, 95, 96, 114, 120, 124, 128, 152, 155, 160, 186, 190, 192, 228, 240, 248, 285, 304, 310, 320, 361, 372, 380, 384, 456, 465, 480, 496, 570, 589, 608, 620, 640, 722, 744, 760, 912, 930, 960, 992, 1083, 1140, 1178, 1216, 1240, 1444, 1488, 1520, 1767, 1805, 1824, 1860, 1920, 1984, 2166, 2280, 2356, 2432, 2480, 2888, 2945, 2976, 3040, 3534, 3610, 3648, 3720, 3968, 4332, 4560, 4712, 4960, 5415, 5776, 5890, 5952, 6080, 7068, 7220, 7296, 7440, 8664, 8835, 9120, 9424, 9920, 10830, 11191, 11552, 11780, 11904, 12160, 14136, 14440, 14880, 17328, 17670, 18240, 18848, 19840, 21660, 22382, 23104, 23560, 28272, 28880, 29760, 33573, 34656, 35340, 36480, 37696, 43320, 44764, 46208, 47120, 55955, 56544, 57760, 59520, 67146, 69312, 70680, 75392, 86640, 89528, 94240, 111910, 113088, 115520, 134292, 138624, 141360, 167865, 173280, 179056, 188480, 223820, 226176, 231040, 268584, 282720, 335730, 346560, 358112, 376960, 447640, 537168, 565440, 671460, 693120, 716224, 895280, 1074336, 1130880, 1342920, 1432448, 1790560, 2148672, 2685840, 3581120, 4297344, 5371680, 7162240, 10743360, 21486720]

約数ペア:

[(1, 21486720), (2, 10743360), (3, 7162240), (4, 5371680), (5, 4297344), (6, 3581120), (8, 2685840), (10, 2148672), (12, 1790560), (15, 1432448), (16, 1342920), (19, 1130880), (20, 1074336), (24, 895280), (30, 716224), (31, 693120), (32, 671460), (38, 565440), (40, 537168), (48, 447640), (57, 376960), (60, 358112), (62, 346560), (64, 335730), (76, 282720), (80, 268584), (93, 231040), (95, 226176), (96, 223820), (114, 188480), (120, 179056), (124, 173280), (128, 167865), (152, 141360), (155, 138624), (160, 134292), (186, 115520), (190, 113088), (192, 111910), (228, 94240), (240, 89528), (248, 86640), (285, 75392), (304, 70680), (310, 69312), (320, 67146), (361, 59520), (372, 57760), (380, 56544), (384, 55955), (456, 47120), (465, 46208), (480, 44764), (496, 43320), (570, 37696), (589, 36480), (608, 35340), (620, 34656), (640, 33573), (722, 29760), (744, 28880), (760, 28272), (912, 23560), (930, 23104), (960, 22382), (992, 21660), (1083, 19840), (1140, 18848), (1178, 18240), (1216, 17670), (1240, 17328), (1444, 14880), (1488, 14440), (1520, 14136), (1767, 12160), (1805, 11904), (1824, 11780), (1860, 11552), (1920, 11191), (1984, 10830), (2166, 9920), (2280, 9424), (2356, 9120), (2432, 8835), (2480, 8664), (2888, 7440), (2945, 7296), (2976, 7220), (3040, 7068), (3534, 6080), (3610, 5952), (3648, 5890), (3720, 5776), (3968, 5415), (4332, 4960), (4560, 4712)]