21276570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1427}}^1$

素因数の和:1515

約数の個数: 64

約数和(自身を含む): 59222016

約数和(自身を除く): 37945446

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1427, 1491, 2130, 2485, 2854, 2982, 4281, 4970, 7135, 7455, 8562, 9989, 14270, 14910, 19978, 21405, 29967, 42810, 49945, 59934, 99890, 101317, 149835, 202634, 299670, 303951, 506585, 607902, 709219, 1013170, 1418438, 1519755, 2127657, 3039510, 3546095, 4255314, 7092190, 10638285, 21276570]

約数ペア:

[(1, 21276570), (2, 10638285), (3, 7092190), (5, 4255314), (6, 3546095), (7, 3039510), (10, 2127657), (14, 1519755), (15, 1418438), (21, 1013170), (30, 709219), (35, 607902), (42, 506585), (70, 303951), (71, 299670), (105, 202634), (142, 149835), (210, 101317), (213, 99890), (355, 59934), (426, 49945), (497, 42810), (710, 29967), (994, 21405), (1065, 19978), (1427, 14910), (1491, 14270), (2130, 9989), (2485, 8562), (2854, 7455), (2982, 7135), (4281, 4970)]