21153470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 22875970

約数列:

[1, 2, 5, 10, 13, 26, 29, 31, 58, 62, 65, 130, 145, 155, 181, 290, 310, 362, 377, 403, 754, 806, 899, 905, 1798, 1810, 1885, 2015, 2353, 3770, 4030, 4495, 4706, 5249, 5611, 8990, 10498, 11222, 11687, 11765, 23374, 23530, 26245, 28055, 52490, 56110, 58435, 68237, 72943, 116870, 136474, 145886, 162719, 325438, 341185, 364715, 682370, 729430, 813595, 1627190, 2115347, 4230694, 10576735, 21153470]

約数ペア:

[(1, 21153470), (2, 10576735), (5, 4230694), (10, 2115347), (13, 1627190), (26, 813595), (29, 729430), (31, 682370), (58, 364715), (62, 341185), (65, 325438), (130, 162719), (145, 145886), (155, 136474), (181, 116870), (290, 72943), (310, 68237), (362, 58435), (377, 56110), (403, 52490), (754, 28055), (806, 26245), (899, 23530), (905, 23374), (1798, 11765), (1810, 11687), (1885, 11222), (2015, 10498), (2353, 8990), (3770, 5611), (4030, 5249), (4495, 4706)]