1639840

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:329

約数の個数: 48

約数和(自身を含む): 3993192

約数和(自身を除く): 2353352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 277, 296, 370, 554, 592, 740, 1108, 1184, 1385, 1480, 2216, 2770, 2960, 4432, 5540, 5920, 8864, 10249, 11080, 20498, 22160, 40996, 44320, 51245, 81992, 102490, 163984, 204980, 327968, 409960, 819920, 1639840]

約数ペア:

[(1, 1639840), (2, 819920), (4, 409960), (5, 327968), (8, 204980), (10, 163984), (16, 102490), (20, 81992), (32, 51245), (37, 44320), (40, 40996), (74, 22160), (80, 20498), (148, 11080), (160, 10249), (185, 8864), (277, 5920), (296, 5540), (370, 4432), (554, 2960), (592, 2770), (740, 2216), (1108, 1480), (1184, 1385)]