78623240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 182891520

約数和(自身を除く): 104268280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 191, 205, 251, 328, 382, 410, 502, 764, 820, 955, 1004, 1255, 1528, 1640, 1910, 2008, 2510, 3820, 5020, 7640, 7831, 10040, 10291, 15662, 20582, 31324, 39155, 41164, 47941, 51455, 62648, 78310, 82328, 95882, 102910, 156620, 191764, 205820, 239705, 313240, 383528, 411640, 479410, 958820, 1917640, 1965581, 3931162, 7862324, 9827905, 15724648, 19655810, 39311620, 78623240]

約数ペア:

[(1, 78623240), (2, 39311620), (4, 19655810), (5, 15724648), (8, 9827905), (10, 7862324), (20, 3931162), (40, 1965581), (41, 1917640), (82, 958820), (164, 479410), (191, 411640), (205, 383528), (251, 313240), (328, 239705), (382, 205820), (410, 191764), (502, 156620), (764, 102910), (820, 95882), (955, 82328), (1004, 78310), (1255, 62648), (1528, 51455), (1640, 47941), (1910, 41164), (2008, 39155), (2510, 31324), (3820, 20582), (5020, 15662), (7640, 10291), (7831, 10040)]