21019770

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{613}}^1$

素因数の和:756

約数の個数: 64

約数和(自身を含む): 56586240

約数和(自身を除く): 35566470

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 127, 135, 254, 270, 381, 613, 635, 762, 1143, 1226, 1270, 1839, 1905, 2286, 3065, 3429, 3678, 3810, 5517, 5715, 6130, 6858, 9195, 11034, 11430, 16551, 17145, 18390, 27585, 33102, 34290, 55170, 77851, 82755, 155702, 165510, 233553, 389255, 467106, 700659, 778510, 1167765, 1401318, 2101977, 2335530, 3503295, 4203954, 7006590, 10509885, 21019770]

約数ペア:

[(1, 21019770), (2, 10509885), (3, 7006590), (5, 4203954), (6, 3503295), (9, 2335530), (10, 2101977), (15, 1401318), (18, 1167765), (27, 778510), (30, 700659), (45, 467106), (54, 389255), (90, 233553), (127, 165510), (135, 155702), (254, 82755), (270, 77851), (381, 55170), (613, 34290), (635, 33102), (762, 27585), (1143, 18390), (1226, 17145), (1270, 16551), (1839, 11430), (1905, 11034), (2286, 9195), (3065, 6858), (3429, 6130), (3678, 5715), (3810, 5517)]