28713680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:564

約数の個数: 80

約数和(自身を含む): 72477504

約数和(自身を除く): 43763824

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 80, 85, 86, 136, 170, 172, 215, 272, 340, 344, 430, 491, 680, 688, 731, 860, 982, 1360, 1462, 1720, 1964, 2455, 2924, 3440, 3655, 3928, 4910, 5848, 7310, 7856, 8347, 9820, 11696, 14620, 16694, 19640, 21113, 29240, 33388, 39280, 41735, 42226, 58480, 66776, 83470, 84452, 105565, 133552, 166940, 168904, 211130, 333880, 337808, 358921, 422260, 667760, 717842, 844520, 1435684, 1689040, 1794605, 2871368, 3589210, 5742736, 7178420, 14356840, 28713680]

約数ペア:

[(1, 28713680), (2, 14356840), (4, 7178420), (5, 5742736), (8, 3589210), (10, 2871368), (16, 1794605), (17, 1689040), (20, 1435684), (34, 844520), (40, 717842), (43, 667760), (68, 422260), (80, 358921), (85, 337808), (86, 333880), (136, 211130), (170, 168904), (172, 166940), (215, 133552), (272, 105565), (340, 84452), (344, 83470), (430, 66776), (491, 58480), (680, 42226), (688, 41735), (731, 39280), (860, 33388), (982, 29240), (1360, 21113), (1462, 19640), (1720, 16694), (1964, 14620), (2455, 11696), (2924, 9820), (3440, 8347), (3655, 7856), (3928, 7310), (4910, 5848)]