18087880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25457720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 58, 62, 116, 124, 145, 155, 232, 248, 290, 310, 503, 580, 620, 899, 1006, 1160, 1240, 1798, 2012, 2515, 3596, 4024, 4495, 5030, 7192, 8990, 10060, 14587, 15593, 17980, 20120, 29174, 31186, 35960, 58348, 62372, 72935, 77965, 116696, 124744, 145870, 155930, 291740, 311860, 452197, 583480, 623720, 904394, 1808788, 2260985, 3617576, 4521970, 9043940, 18087880]

約数ペア:

[(1, 18087880), (2, 9043940), (4, 4521970), (5, 3617576), (8, 2260985), (10, 1808788), (20, 904394), (29, 623720), (31, 583480), (40, 452197), (58, 311860), (62, 291740), (116, 155930), (124, 145870), (145, 124744), (155, 116696), (232, 77965), (248, 72935), (290, 62372), (310, 58348), (503, 35960), (580, 31186), (620, 29174), (899, 20120), (1006, 17980), (1160, 15593), (1240, 14587), (1798, 10060), (2012, 8990), (2515, 7192), (3596, 5030), (4024, 4495)]