21240296

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 52678080

約数和(自身を除く): 31437784

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 41, 44, 56, 58, 77, 82, 88, 116, 154, 164, 203, 232, 287, 308, 319, 328, 406, 451, 574, 616, 638, 812, 841, 902, 1148, 1189, 1276, 1624, 1682, 1804, 2233, 2296, 2378, 2552, 3157, 3364, 3608, 4466, 4756, 5887, 6314, 6728, 8323, 8932, 9251, 9512, 11774, 12628, 13079, 16646, 17864, 18502, 23548, 25256, 26158, 33292, 34481, 37004, 47096, 52316, 64757, 66584, 68962, 74008, 91553, 104632, 129514, 137924, 183106, 241367, 259028, 275848, 366212, 379291, 482734, 518056, 732424, 758582, 965468, 1517164, 1930936, 2655037, 3034328, 5310074, 10620148, 21240296]

約数ペア:

[(1, 21240296), (2, 10620148), (4, 5310074), (7, 3034328), (8, 2655037), (11, 1930936), (14, 1517164), (22, 965468), (28, 758582), (29, 732424), (41, 518056), (44, 482734), (56, 379291), (58, 366212), (77, 275848), (82, 259028), (88, 241367), (116, 183106), (154, 137924), (164, 129514), (203, 104632), (232, 91553), (287, 74008), (308, 68962), (319, 66584), (328, 64757), (406, 52316), (451, 47096), (574, 37004), (616, 34481), (638, 33292), (812, 26158), (841, 25256), (902, 23548), (1148, 18502), (1189, 17864), (1276, 16646), (1624, 13079), (1682, 12628), (1804, 11774), (2233, 9512), (2296, 9251), (2378, 8932), (2552, 8323), (3157, 6728), (3364, 6314), (3608, 5887), (4466, 4756)]