87016780

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 186348960

約数和(自身を除く): 99332180

約数列:

[1, 2, 4, 5, 10, 20, 113, 139, 226, 277, 278, 452, 554, 556, 565, 695, 1108, 1130, 1385, 1390, 2260, 2770, 2780, 5540, 15707, 31301, 31414, 38503, 62602, 62828, 77006, 78535, 125204, 154012, 156505, 157070, 192515, 313010, 314140, 385030, 626020, 770060, 4350839, 8701678, 17403356, 21754195, 43508390, 87016780]

約数ペア:

[(1, 87016780), (2, 43508390), (4, 21754195), (5, 17403356), (10, 8701678), (20, 4350839), (113, 770060), (139, 626020), (226, 385030), (277, 314140), (278, 313010), (452, 192515), (554, 157070), (556, 156505), (565, 154012), (695, 125204), (1108, 78535), (1130, 77006), (1385, 62828), (1390, 62602), (2260, 38503), (2770, 31414), (2780, 31301), (5540, 15707)]