21140946

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 49443840

約数和(自身を除く): 28302894

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 73, 93, 146, 173, 186, 219, 279, 346, 438, 519, 558, 657, 837, 1038, 1314, 1557, 1674, 1971, 2263, 3114, 3942, 4526, 4671, 5363, 6789, 9342, 10726, 12629, 13578, 16089, 20367, 25258, 32178, 37887, 40734, 48267, 61101, 75774, 96534, 113661, 122202, 144801, 227322, 289602, 340983, 391499, 681966, 782998, 1174497, 2348994, 3523491, 7046982, 10570473, 21140946]

約数ペア:

[(1, 21140946), (2, 10570473), (3, 7046982), (6, 3523491), (9, 2348994), (18, 1174497), (27, 782998), (31, 681966), (54, 391499), (62, 340983), (73, 289602), (93, 227322), (146, 144801), (173, 122202), (186, 113661), (219, 96534), (279, 75774), (346, 61101), (438, 48267), (519, 40734), (558, 37887), (657, 32178), (837, 25258), (1038, 20367), (1314, 16089), (1557, 13578), (1674, 12629), (1971, 10726), (2263, 9342), (3114, 6789), (3942, 5363), (4526, 4671)]