647777980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{587}}^1\times {\mathrm{2399}}^1$

素因数の和:3018

約数の個数: 48

約数和(自身を含む): 1422489600

約数和(自身を除く): 774711620

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 587, 1174, 2348, 2399, 2935, 4798, 5870, 9596, 11740, 11995, 13501, 23990, 27002, 47980, 54004, 55177, 67505, 110354, 135010, 220708, 270020, 275885, 551770, 1103540, 1408213, 2816426, 5632852, 7041065, 14082130, 28164260, 32388899, 64777798, 129555596, 161944495, 323888990, 647777980]

約数ペア:

[(1, 647777980), (2, 323888990), (4, 161944495), (5, 129555596), (10, 64777798), (20, 32388899), (23, 28164260), (46, 14082130), (92, 7041065), (115, 5632852), (230, 2816426), (460, 1408213), (587, 1103540), (1174, 551770), (2348, 275885), (2399, 270020), (2935, 220708), (4798, 135010), (5870, 110354), (9596, 67505), (11740, 55177), (11995, 54004), (13501, 47980), (23990, 27002)]