28742920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1054

約数の個数: 64

約数和(自身を含む): 70139520

約数和(自身を除く): 41396600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 680, 731, 860, 983, 1462, 1720, 1966, 2924, 3655, 3932, 4915, 5848, 7310, 7864, 9830, 14620, 16711, 19660, 29240, 33422, 39320, 42269, 66844, 83555, 84538, 133688, 167110, 169076, 211345, 334220, 338152, 422690, 668440, 718573, 845380, 1437146, 1690760, 2874292, 3592865, 5748584, 7185730, 14371460, 28742920]

約数ペア:

[(1, 28742920), (2, 14371460), (4, 7185730), (5, 5748584), (8, 3592865), (10, 2874292), (17, 1690760), (20, 1437146), (34, 845380), (40, 718573), (43, 668440), (68, 422690), (85, 338152), (86, 334220), (136, 211345), (170, 169076), (172, 167110), (215, 133688), (340, 84538), (344, 83555), (430, 66844), (680, 42269), (731, 39320), (860, 33422), (983, 29240), (1462, 19660), (1720, 16711), (1966, 14620), (2924, 9830), (3655, 7864), (3932, 7310), (4915, 5848)]