81397320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21881}}^1$

素因数の和:21926

約数の個数: 64

約数和(自身を含む): 252080640

約数和(自身を除く): 170683320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 21881, 43762, 65643, 87524, 109405, 131286, 175048, 218810, 262572, 328215, 437620, 525144, 656430, 678311, 875240, 1312860, 1356622, 2034933, 2625720, 2713244, 3391555, 4069866, 5426488, 6783110, 8139732, 10174665, 13566220, 16279464, 20349330, 27132440, 40698660, 81397320]

約数ペア:

[(1, 81397320), (2, 40698660), (3, 27132440), (4, 20349330), (5, 16279464), (6, 13566220), (8, 10174665), (10, 8139732), (12, 6783110), (15, 5426488), (20, 4069866), (24, 3391555), (30, 2713244), (31, 2625720), (40, 2034933), (60, 1356622), (62, 1312860), (93, 875240), (120, 678311), (124, 656430), (155, 525144), (186, 437620), (248, 328215), (310, 262572), (372, 218810), (465, 175048), (620, 131286), (744, 109405), (930, 87524), (1240, 65643), (1860, 43762), (3720, 21881)]