20923890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4127}}^1$

素因数の和:4163

約数の個数: 48

約数和(自身を含む): 54390528

約数和(自身を除く): 33466638

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4127, 5070, 8254, 12381, 20635, 24762, 41270, 53651, 61905, 107302, 123810, 160953, 268255, 321906, 536510, 697463, 804765, 1394926, 1609530, 2092389, 3487315, 4184778, 6974630, 10461945, 20923890]

約数ペア:

[(1, 20923890), (2, 10461945), (3, 6974630), (5, 4184778), (6, 3487315), (10, 2092389), (13, 1609530), (15, 1394926), (26, 804765), (30, 697463), (39, 536510), (65, 321906), (78, 268255), (130, 160953), (169, 123810), (195, 107302), (338, 61905), (390, 53651), (507, 41270), (845, 24762), (1014, 20635), (1690, 12381), (2535, 8254), (4127, 5070)]