21118510

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:206

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24500690

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 49, 70, 94, 98, 131, 235, 245, 262, 329, 343, 470, 490, 655, 658, 686, 917, 1310, 1645, 1715, 1834, 2303, 3290, 3430, 4585, 4606, 6157, 6419, 9170, 11515, 12314, 12838, 16121, 23030, 30785, 32095, 32242, 43099, 44933, 61570, 64190, 80605, 86198, 89866, 161210, 215495, 224665, 301693, 430990, 449330, 603386, 1508465, 2111851, 3016930, 4223702, 10559255, 21118510]

約数ペア:

[(1, 21118510), (2, 10559255), (5, 4223702), (7, 3016930), (10, 2111851), (14, 1508465), (35, 603386), (47, 449330), (49, 430990), (70, 301693), (94, 224665), (98, 215495), (131, 161210), (235, 89866), (245, 86198), (262, 80605), (329, 64190), (343, 61570), (470, 44933), (490, 43099), (655, 32242), (658, 32095), (686, 30785), (917, 23030), (1310, 16121), (1645, 12838), (1715, 12314), (1834, 11515), (2303, 9170), (3290, 6419), (3430, 6157), (4585, 4606)]