8220740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 19662720

約数和(自身を除く): 11441980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 79, 86, 110, 121, 158, 172, 215, 220, 242, 316, 395, 430, 473, 484, 605, 790, 860, 869, 946, 1210, 1580, 1738, 1892, 2365, 2420, 3397, 3476, 4345, 4730, 5203, 6794, 8690, 9460, 9559, 10406, 13588, 16985, 17380, 19118, 20812, 26015, 33970, 37367, 38236, 47795, 52030, 67940, 74734, 95590, 104060, 149468, 186835, 191180, 373670, 411037, 747340, 822074, 1644148, 2055185, 4110370, 8220740]

約数ペア:

[(1, 8220740), (2, 4110370), (4, 2055185), (5, 1644148), (10, 822074), (11, 747340), (20, 411037), (22, 373670), (43, 191180), (44, 186835), (55, 149468), (79, 104060), (86, 95590), (110, 74734), (121, 67940), (158, 52030), (172, 47795), (215, 38236), (220, 37367), (242, 33970), (316, 26015), (395, 20812), (430, 19118), (473, 17380), (484, 16985), (605, 13588), (790, 10406), (860, 9559), (869, 9460), (946, 8690), (1210, 6794), (1580, 5203), (1738, 4730), (1892, 4345), (2365, 3476), (2420, 3397)]