87123740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{1097}}^1$

素因数の和:1155

約数の個数: 72

約数和(自身を含む): 210842352

約数和(自身を除く): 123718612

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1045, 1097, 1444, 1805, 2090, 2194, 3610, 3971, 4180, 4388, 5485, 7220, 7942, 10970, 12067, 15884, 19855, 20843, 21940, 24134, 39710, 41686, 48268, 60335, 79420, 83372, 104215, 120670, 208430, 229273, 241340, 396017, 416860, 458546, 792034, 917092, 1146365, 1584068, 1980085, 2292730, 3960170, 4356187, 4585460, 7920340, 8712374, 17424748, 21780935, 43561870, 87123740]

約数ペア:

[(1, 87123740), (2, 43561870), (4, 21780935), (5, 17424748), (10, 8712374), (11, 7920340), (19, 4585460), (20, 4356187), (22, 3960170), (38, 2292730), (44, 1980085), (55, 1584068), (76, 1146365), (95, 917092), (110, 792034), (190, 458546), (209, 416860), (220, 396017), (361, 241340), (380, 229273), (418, 208430), (722, 120670), (836, 104215), (1045, 83372), (1097, 79420), (1444, 60335), (1805, 48268), (2090, 41686), (2194, 39710), (3610, 24134), (3971, 21940), (4180, 20843), (4388, 19855), (5485, 15884), (7220, 12067), (7942, 10970)]