21380580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9137}}^1$

素因数の和:9165

約数の個数: 72

約数和(自身を含む): 69850872

約数和(自身を除く): 48470292

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9137, 18274, 27411, 36548, 45685, 54822, 82233, 91370, 109644, 118781, 137055, 164466, 182740, 237562, 274110, 328932, 356343, 411165, 475124, 548220, 593905, 712686, 822330, 1069029, 1187810, 1425372, 1644660, 1781715, 2138058, 2375620, 3563430, 4276116, 5345145, 7126860, 10690290, 21380580]

約数ペア:

[(1, 21380580), (2, 10690290), (3, 7126860), (4, 5345145), (5, 4276116), (6, 3563430), (9, 2375620), (10, 2138058), (12, 1781715), (13, 1644660), (15, 1425372), (18, 1187810), (20, 1069029), (26, 822330), (30, 712686), (36, 593905), (39, 548220), (45, 475124), (52, 411165), (60, 356343), (65, 328932), (78, 274110), (90, 237562), (117, 182740), (130, 164466), (156, 137055), (180, 118781), (195, 109644), (234, 91370), (260, 82233), (390, 54822), (468, 45685), (585, 36548), (780, 27411), (1170, 18274), (2340, 9137)]