72201820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{461}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 156473856

約数和(自身を除く): 84272036

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 191, 205, 382, 410, 461, 764, 820, 922, 955, 1844, 1910, 2305, 3820, 4610, 7831, 9220, 15662, 18901, 31324, 37802, 39155, 75604, 78310, 88051, 94505, 156620, 176102, 189010, 352204, 378020, 440255, 880510, 1761020, 3610091, 7220182, 14440364, 18050455, 36100910, 72201820]

約数ペア:

[(1, 72201820), (2, 36100910), (4, 18050455), (5, 14440364), (10, 7220182), (20, 3610091), (41, 1761020), (82, 880510), (164, 440255), (191, 378020), (205, 352204), (382, 189010), (410, 176102), (461, 156620), (764, 94505), (820, 88051), (922, 78310), (955, 75604), (1844, 39155), (1910, 37802), (2305, 31324), (3820, 18901), (4610, 15662), (7831, 9220)]