639599792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{28211}}^1$

素因数の和:28341

約数の個数: 40

約数和(自身を含む): 1346840880

約数和(自身を除く): 707241088

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 1417, 1744, 2834, 5668, 11336, 22672, 28211, 56422, 112844, 225688, 366743, 451376, 733486, 1466972, 2933944, 3074999, 5867888, 6149998, 12299996, 24599992, 39974987, 49199984, 79949974, 159899948, 319799896, 639599792]

約数ペア:

[(1, 639599792), (2, 319799896), (4, 159899948), (8, 79949974), (13, 49199984), (16, 39974987), (26, 24599992), (52, 12299996), (104, 6149998), (109, 5867888), (208, 3074999), (218, 2933944), (436, 1466972), (872, 733486), (1417, 451376), (1744, 366743), (2834, 225688), (5668, 112844), (11336, 56422), (22672, 28211)]