21081390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{331}}^1$

素因数の和:545

約数の個数: 64

約数和(自身を含む): 55648512

約数和(自身を除く): 34567122

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 193, 330, 331, 386, 579, 662, 965, 993, 1158, 1655, 1930, 1986, 2123, 2895, 3310, 3641, 4246, 4965, 5790, 6369, 7282, 9930, 10615, 10923, 12738, 18205, 21230, 21846, 31845, 36410, 54615, 63690, 63883, 109230, 127766, 191649, 319415, 383298, 638830, 702713, 958245, 1405426, 1916490, 2108139, 3513565, 4216278, 7027130, 10540695, 21081390]

約数ペア:

[(1, 21081390), (2, 10540695), (3, 7027130), (5, 4216278), (6, 3513565), (10, 2108139), (11, 1916490), (15, 1405426), (22, 958245), (30, 702713), (33, 638830), (55, 383298), (66, 319415), (110, 191649), (165, 127766), (193, 109230), (330, 63883), (331, 63690), (386, 54615), (579, 36410), (662, 31845), (965, 21846), (993, 21230), (1158, 18205), (1655, 12738), (1930, 10923), (1986, 10615), (2123, 9930), (2895, 7282), (3310, 6369), (3641, 5790), (4246, 4965)]