61391980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{607}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 139426560

約数和(自身を除く): 78034580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 607, 778, 1214, 1556, 1945, 2428, 3035, 3890, 5057, 6070, 7780, 7891, 10114, 12140, 15782, 20228, 25285, 31564, 39455, 50570, 78910, 101140, 157820, 236123, 472246, 944492, 1180615, 2361230, 3069599, 4722460, 6139198, 12278396, 15347995, 30695990, 61391980]

約数ペア:

[(1, 61391980), (2, 30695990), (4, 15347995), (5, 12278396), (10, 6139198), (13, 4722460), (20, 3069599), (26, 2361230), (52, 1180615), (65, 944492), (130, 472246), (260, 236123), (389, 157820), (607, 101140), (778, 78910), (1214, 50570), (1556, 39455), (1945, 31564), (2428, 25285), (3035, 20228), (3890, 15782), (5057, 12140), (6070, 10114), (7780, 7891)]