638290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 32

約数和(自身を含む): 1244160

約数和(自身を除く): 605870

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 71, 142, 145, 155, 290, 310, 355, 710, 899, 1798, 2059, 2201, 4118, 4402, 4495, 8990, 10295, 11005, 20590, 22010, 63829, 127658, 319145, 638290]

約数ペア:

[(1, 638290), (2, 319145), (5, 127658), (10, 63829), (29, 22010), (31, 20590), (58, 11005), (62, 10295), (71, 8990), (142, 4495), (145, 4402), (155, 4118), (290, 2201), (310, 2059), (355, 1798), (710, 899)]