20212140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25913}}^1$

素因数の和:25938

約数の個数: 48

約数和(自身を含む): 60949728

約数和(自身を除く): 40737588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25913, 51826, 77739, 103652, 129565, 155478, 259130, 310956, 336869, 388695, 518260, 673738, 777390, 1010607, 1347476, 1554780, 1684345, 2021214, 3368690, 4042428, 5053035, 6737380, 10106070, 20212140]

約数ペア:

[(1, 20212140), (2, 10106070), (3, 6737380), (4, 5053035), (5, 4042428), (6, 3368690), (10, 2021214), (12, 1684345), (13, 1554780), (15, 1347476), (20, 1010607), (26, 777390), (30, 673738), (39, 518260), (52, 388695), (60, 336869), (65, 310956), (78, 259130), (130, 155478), (156, 129565), (195, 103652), (260, 77739), (390, 51826), (780, 25913)]