81103720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:682

約数の個数: 64

約数和(自身を含む): 190512000

約数和(自身を除く): 109408280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 139, 145, 232, 278, 290, 503, 556, 580, 695, 1006, 1112, 1160, 1390, 2012, 2515, 2780, 4024, 4031, 5030, 5560, 8062, 10060, 14587, 16124, 20120, 20155, 29174, 32248, 40310, 58348, 69917, 72935, 80620, 116696, 139834, 145870, 161240, 279668, 291740, 349585, 559336, 583480, 699170, 1398340, 2027593, 2796680, 4055186, 8110372, 10137965, 16220744, 20275930, 40551860, 81103720]

約数ペア:

[(1, 81103720), (2, 40551860), (4, 20275930), (5, 16220744), (8, 10137965), (10, 8110372), (20, 4055186), (29, 2796680), (40, 2027593), (58, 1398340), (116, 699170), (139, 583480), (145, 559336), (232, 349585), (278, 291740), (290, 279668), (503, 161240), (556, 145870), (580, 139834), (695, 116696), (1006, 80620), (1112, 72935), (1160, 69917), (1390, 58348), (2012, 40310), (2515, 32248), (2780, 29174), (4024, 20155), (4031, 20120), (5030, 16124), (5560, 14587), (8062, 10060)]