21025236440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{587}}^1\times {\mathrm{68881}}^1$

素因数の和:69492

約数の個数: 64

約数和(自身を含む): 51033296160

約数和(自身を除く): 30008059720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 587, 1174, 2348, 2935, 4696, 5870, 7631, 11740, 15262, 23480, 30524, 38155, 61048, 68881, 76310, 137762, 152620, 275524, 305240, 344405, 551048, 688810, 895453, 1377620, 1790906, 2755240, 3581812, 4477265, 7163624, 8954530, 17909060, 35818120, 40433147, 80866294, 161732588, 202165735, 323465176, 404331470, 525630911, 808662940, 1051261822, 1617325880, 2102523644, 2628154555, 4205047288, 5256309110, 10512618220, 21025236440]

約数ペア:

[(1, 21025236440), (2, 10512618220), (4, 5256309110), (5, 4205047288), (8, 2628154555), (10, 2102523644), (13, 1617325880), (20, 1051261822), (26, 808662940), (40, 525630911), (52, 404331470), (65, 323465176), (104, 202165735), (130, 161732588), (260, 80866294), (520, 40433147), (587, 35818120), (1174, 17909060), (2348, 8954530), (2935, 7163624), (4696, 4477265), (5870, 3581812), (7631, 2755240), (11740, 1790906), (15262, 1377620), (23480, 895453), (30524, 688810), (38155, 551048), (61048, 344405), (68881, 305240), (76310, 275524), (137762, 152620)]