21561864

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 56547840

約数和(自身を除く): 34985976

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 73, 93, 124, 146, 186, 219, 248, 292, 372, 397, 438, 584, 744, 794, 876, 1191, 1588, 1752, 2263, 2382, 3176, 4526, 4764, 6789, 9052, 9528, 12307, 13578, 18104, 24614, 27156, 28981, 36921, 49228, 54312, 57962, 73842, 86943, 98456, 115924, 147684, 173886, 231848, 295368, 347772, 695544, 898411, 1796822, 2695233, 3593644, 5390466, 7187288, 10780932, 21561864]

約数ペア:

[(1, 21561864), (2, 10780932), (3, 7187288), (4, 5390466), (6, 3593644), (8, 2695233), (12, 1796822), (24, 898411), (31, 695544), (62, 347772), (73, 295368), (93, 231848), (124, 173886), (146, 147684), (186, 115924), (219, 98456), (248, 86943), (292, 73842), (372, 57962), (397, 54312), (438, 49228), (584, 36921), (744, 28981), (794, 27156), (876, 24614), (1191, 18104), (1588, 13578), (1752, 12307), (2263, 9528), (2382, 9052), (3176, 6789), (4526, 4764)]