639392

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 48

約数和(自身を含む): 1428840

約数和(自身を除く): 789448

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 53, 58, 104, 106, 116, 208, 212, 232, 377, 416, 424, 464, 689, 754, 848, 928, 1378, 1508, 1537, 1696, 2756, 3016, 3074, 5512, 6032, 6148, 11024, 12064, 12296, 19981, 22048, 24592, 39962, 49184, 79924, 159848, 319696, 639392]

約数ペア:

[(1, 639392), (2, 319696), (4, 159848), (8, 79924), (13, 49184), (16, 39962), (26, 24592), (29, 22048), (32, 19981), (52, 12296), (53, 12064), (58, 11024), (104, 6148), (106, 6032), (116, 5512), (208, 3074), (212, 3016), (232, 2756), (377, 1696), (416, 1537), (424, 1508), (464, 1378), (689, 928), (754, 848)]