81202960

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1303}}^1$

素因数の和:1376

約数の個数: 80

約数和(自身を含む): 203736960

約数和(自身を除く): 122534000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 1303, 1520, 1558, 1640, 2606, 3116, 3280, 3895, 5212, 6232, 6515, 7790, 10424, 12464, 13030, 15580, 20848, 24757, 26060, 31160, 49514, 52120, 53423, 62320, 99028, 104240, 106846, 123785, 198056, 213692, 247570, 267115, 396112, 427384, 495140, 534230, 854768, 990280, 1015037, 1068460, 1980560, 2030074, 2136920, 4060148, 4273840, 5075185, 8120296, 10150370, 16240592, 20300740, 40601480, 81202960]

約数ペア:

[(1, 81202960), (2, 40601480), (4, 20300740), (5, 16240592), (8, 10150370), (10, 8120296), (16, 5075185), (19, 4273840), (20, 4060148), (38, 2136920), (40, 2030074), (41, 1980560), (76, 1068460), (80, 1015037), (82, 990280), (95, 854768), (152, 534230), (164, 495140), (190, 427384), (205, 396112), (304, 267115), (328, 247570), (380, 213692), (410, 198056), (656, 123785), (760, 106846), (779, 104240), (820, 99028), (1303, 62320), (1520, 53423), (1558, 52120), (1640, 49514), (2606, 31160), (3116, 26060), (3280, 24757), (3895, 20848), (5212, 15580), (6232, 13030), (6515, 12464), (7790, 10424)]