81131.000000

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 1653120

約数和(自身を除く): 971780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 163, 190, 209, 220, 326, 380, 418, 652, 815, 836, 1045, 1630, 1793, 2090, 3097, 3260, 3586, 4180, 6194, 7172, 8965, 12388, 15485, 17930, 30970, 34067, 35860, 61940, 68134, 136268, 170335, 340670, 681340]

約数ペア:

[(1, 681340), (2, 340670), (4, 170335), (5, 136268), (10, 68134), (11, 61940), (19, 35860), (20, 34067), (22, 30970), (38, 17930), (44, 15485), (55, 12388), (76, 8965), (95, 7172), (110, 6194), (163, 4180), (190, 3586), (209, 3260), (220, 3097), (326, 2090), (380, 1793), (418, 1630), (652, 1045), (815, 836)]