21682430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{971}}^1$

素因数の和:1025

約数の個数: 64

約数和(自身を含む): 50388480

約数和(自身を除く): 28706050

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 29, 35, 55, 58, 70, 77, 110, 145, 154, 203, 290, 319, 385, 406, 638, 770, 971, 1015, 1595, 1942, 2030, 2233, 3190, 4466, 4855, 6797, 9710, 10681, 11165, 13594, 21362, 22330, 28159, 33985, 53405, 56318, 67970, 74767, 106810, 140795, 149534, 197113, 281590, 309749, 373835, 394226, 619498, 747670, 985565, 1548745, 1971130, 2168243, 3097490, 4336486, 10841215, 21682430]

約数ペア:

[(1, 21682430), (2, 10841215), (5, 4336486), (7, 3097490), (10, 2168243), (11, 1971130), (14, 1548745), (22, 985565), (29, 747670), (35, 619498), (55, 394226), (58, 373835), (70, 309749), (77, 281590), (110, 197113), (145, 149534), (154, 140795), (203, 106810), (290, 74767), (319, 67970), (385, 56318), (406, 53405), (638, 33985), (770, 28159), (971, 22330), (1015, 21362), (1595, 13594), (1942, 11165), (2030, 10681), (2233, 9710), (3190, 6797), (4466, 4855)]