400993996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1\times {\mathrm{269}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 768398400

約数和(自身を除く): 367404404

約数列:

[1, 2, 4, 13, 26, 52, 109, 218, 263, 269, 436, 526, 538, 1052, 1076, 1417, 2834, 3419, 3497, 5668, 6838, 6994, 13676, 13988, 28667, 29321, 57334, 58642, 70747, 114668, 117284, 141494, 282988, 372671, 381173, 745342, 762346, 919711, 1490684, 1524692, 1839422, 3678844, 7711423, 15422846, 30845692, 100248499, 200496998, 400993996]

約数ペア:

[(1, 400993996), (2, 200496998), (4, 100248499), (13, 30845692), (26, 15422846), (52, 7711423), (109, 3678844), (218, 1839422), (263, 1524692), (269, 1490684), (436, 919711), (526, 762346), (538, 745342), (1052, 381173), (1076, 372671), (1417, 282988), (2834, 141494), (3419, 117284), (3497, 114668), (5668, 70747), (6838, 58642), (6994, 57334), (13676, 29321), (13988, 28667)]