21116865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 22014015

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 47, 55, 77, 105, 141, 165, 231, 235, 329, 385, 389, 517, 705, 987, 1155, 1167, 1551, 1645, 1945, 2585, 2723, 3619, 4279, 4935, 5835, 7755, 8169, 10857, 12837, 13615, 18095, 18283, 21395, 29953, 40845, 54285, 54849, 64185, 89859, 91415, 127981, 149765, 201113, 274245, 383943, 449295, 603339, 639905, 1005565, 1407791, 1919715, 3016695, 4223373, 7038955, 21116865]

約数ペア:

[(1, 21116865), (3, 7038955), (5, 4223373), (7, 3016695), (11, 1919715), (15, 1407791), (21, 1005565), (33, 639905), (35, 603339), (47, 449295), (55, 383943), (77, 274245), (105, 201113), (141, 149765), (165, 127981), (231, 91415), (235, 89859), (329, 64185), (385, 54849), (389, 54285), (517, 40845), (705, 29953), (987, 21395), (1155, 18283), (1167, 18095), (1551, 13615), (1645, 12837), (1945, 10857), (2585, 8169), (2723, 7755), (3619, 5835), (4279, 4935)]