87870740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{593}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 191600640

約数和(自身を除く): 103729900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 239, 310, 478, 593, 620, 956, 1186, 1195, 2372, 2390, 2965, 4780, 5930, 7409, 11860, 14818, 18383, 29636, 36766, 37045, 73532, 74090, 91915, 141727, 148180, 183830, 283454, 367660, 566908, 708635, 1417270, 2834540, 4393537, 8787074, 17574148, 21967685, 43935370, 87870740]

約数ペア:

[(1, 87870740), (2, 43935370), (4, 21967685), (5, 17574148), (10, 8787074), (20, 4393537), (31, 2834540), (62, 1417270), (124, 708635), (155, 566908), (239, 367660), (310, 283454), (478, 183830), (593, 148180), (620, 141727), (956, 91915), (1186, 74090), (1195, 73532), (2372, 37045), (2390, 36766), (2965, 29636), (4780, 18383), (5930, 14818), (7409, 11860)]