51879640

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 120146400

約数和(自身を除く): 68266760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 109, 146, 163, 218, 292, 326, 365, 436, 545, 584, 652, 730, 815, 872, 1090, 1304, 1460, 1630, 2180, 2920, 3260, 4360, 6520, 7957, 11899, 15914, 17767, 23798, 31828, 35534, 39785, 47596, 59495, 63656, 71068, 79570, 88835, 95192, 118990, 142136, 159140, 177670, 237980, 318280, 355340, 475960, 710680, 1296991, 2593982, 5187964, 6484955, 10375928, 12969910, 25939820, 51879640]

約数ペア:

[(1, 51879640), (2, 25939820), (4, 12969910), (5, 10375928), (8, 6484955), (10, 5187964), (20, 2593982), (40, 1296991), (73, 710680), (109, 475960), (146, 355340), (163, 318280), (218, 237980), (292, 177670), (326, 159140), (365, 142136), (436, 118990), (545, 95192), (584, 88835), (652, 79570), (730, 71068), (815, 63656), (872, 59495), (1090, 47596), (1304, 39785), (1460, 35534), (1630, 31828), (2180, 23798), (2920, 17767), (3260, 15914), (4360, 11899), (6520, 7957)]