12911720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7873}}^1$

素因数の和:7925

約数の個数: 32

約数和(自身を含む): 29763720

約数和(自身を除く): 16852000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7873, 15746, 31492, 39365, 62984, 78730, 157460, 314920, 322793, 645586, 1291172, 1613965, 2582344, 3227930, 6455860, 12911720]

約数ペア:

[(1, 12911720), (2, 6455860), (4, 3227930), (5, 2582344), (8, 1613965), (10, 1291172), (20, 645586), (40, 322793), (41, 314920), (82, 157460), (164, 78730), (205, 62984), (328, 39365), (410, 31492), (820, 15746), (1640, 7873)]