13400990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 11758690

約数列:

[1, 2, 5, 10, 31, 62, 139, 155, 278, 310, 311, 622, 695, 1390, 1555, 3110, 4309, 8618, 9641, 19282, 21545, 43090, 43229, 48205, 86458, 96410, 216145, 432290, 1340099, 2680198, 6700495, 13400990]

約数ペア:

[(1, 13400990), (2, 6700495), (5, 2680198), (10, 1340099), (31, 432290), (62, 216145), (139, 96410), (155, 86458), (278, 48205), (310, 43229), (311, 43090), (622, 21545), (695, 19282), (1390, 9641), (1555, 8618), (3110, 4309)]