638291208

素因数分解:

$2^3\times 3^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1\times {\mathrm{991}}^1$

素因数の和:1618

約数の個数: 64

約数和(自身を含む): 1634181120

約数和(自身を除く): 995889912

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564, 571, 991, 1128, 1142, 1713, 1982, 2284, 2973, 3426, 3964, 4568, 5946, 6852, 7928, 11892, 13704, 23784, 26837, 46577, 53674, 80511, 93154, 107348, 139731, 161022, 186308, 214696, 279462, 322044, 372616, 558924, 565861, 644088, 1117848, 1131722, 1697583, 2263444, 3395166, 4526888, 6790332, 13580664, 26595467, 53190934, 79786401, 106381868, 159572802, 212763736, 319145604, 638291208]

約数ペア:

[(1, 638291208), (2, 319145604), (3, 212763736), (4, 159572802), (6, 106381868), (8, 79786401), (12, 53190934), (24, 26595467), (47, 13580664), (94, 6790332), (141, 4526888), (188, 3395166), (282, 2263444), (376, 1697583), (564, 1131722), (571, 1117848), (991, 644088), (1128, 565861), (1142, 558924), (1713, 372616), (1982, 322044), (2284, 279462), (2973, 214696), (3426, 186308), (3964, 161022), (4568, 139731), (5946, 107348), (6852, 93154), (7928, 80511), (11892, 53674), (13704, 46577), (23784, 26837)]