656436890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{48661}}^1$

素因数の和:48758

約数の個数: 32

約数和(自身を含む): 1261319040

約数和(自身を除く): 604882150

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 2698, 6745, 13490, 48661, 97322, 243305, 486610, 924559, 1849118, 3454931, 4622795, 6909862, 9245590, 17274655, 34549310, 65643689, 131287378, 328218445, 656436890]

約数ペア:

[(1, 656436890), (2, 328218445), (5, 131287378), (10, 65643689), (19, 34549310), (38, 17274655), (71, 9245590), (95, 6909862), (142, 4622795), (190, 3454931), (355, 1849118), (710, 924559), (1349, 486610), (2698, 243305), (6745, 97322), (13490, 48661)]