28681640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2903}}^1$

素因数の和:2946

約数の個数: 64

約数和(自身を含む): 73180800

約数和(自身を除く): 44499160

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 2903, 4940, 5806, 9880, 11612, 14515, 23224, 29030, 37739, 55157, 58060, 75478, 110314, 116120, 150956, 188695, 220628, 275785, 301912, 377390, 441256, 551570, 717041, 754780, 1103140, 1434082, 1509560, 2206280, 2868164, 3585205, 5736328, 7170410, 14340820, 28681640]

約数ペア:

[(1, 28681640), (2, 14340820), (4, 7170410), (5, 5736328), (8, 3585205), (10, 2868164), (13, 2206280), (19, 1509560), (20, 1434082), (26, 1103140), (38, 754780), (40, 717041), (52, 551570), (65, 441256), (76, 377390), (95, 301912), (104, 275785), (130, 220628), (152, 188695), (190, 150956), (247, 116120), (260, 110314), (380, 75478), (494, 58060), (520, 55157), (760, 37739), (988, 29030), (1235, 23224), (1976, 14515), (2470, 11612), (2903, 9880), (4940, 5806)]