12842840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{191}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 29773440

約数和(自身を除く): 16930600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 191, 205, 328, 382, 410, 764, 820, 955, 1528, 1640, 1681, 1910, 3362, 3820, 6724, 7640, 7831, 8405, 13448, 15662, 16810, 31324, 33620, 39155, 62648, 67240, 78310, 156620, 313240, 321071, 642142, 1284284, 1605355, 2568568, 3210710, 6421420, 12842840]

約数ペア:

[(1, 12842840), (2, 6421420), (4, 3210710), (5, 2568568), (8, 1605355), (10, 1284284), (20, 642142), (40, 321071), (41, 313240), (82, 156620), (164, 78310), (191, 67240), (205, 62648), (328, 39155), (382, 33620), (410, 31324), (764, 16810), (820, 15662), (955, 13448), (1528, 8405), (1640, 7831), (1681, 7640), (1910, 6724), (3362, 3820)]