639030848

素因数分解:

$2^6\times {\mathrm{37}}^1\times {\mathrm{421}}^1\times {\mathrm{641}}^1$

素因数の和:1111

約数の個数: 56

約数和(自身を含む): 1307479224

約数和(自身を除く): 668448376

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 148, 296, 421, 592, 641, 842, 1184, 1282, 1684, 2368, 2564, 3368, 5128, 6736, 10256, 13472, 15577, 20512, 23717, 26944, 31154, 41024, 47434, 62308, 94868, 124616, 189736, 249232, 269861, 379472, 498464, 539722, 758944, 996928, 1079444, 1517888, 2158888, 4317776, 8635552, 9984857, 17271104, 19969714, 39939428, 79878856, 159757712, 319515424, 639030848]

約数ペア:

[(1, 639030848), (2, 319515424), (4, 159757712), (8, 79878856), (16, 39939428), (32, 19969714), (37, 17271104), (64, 9984857), (74, 8635552), (148, 4317776), (296, 2158888), (421, 1517888), (592, 1079444), (641, 996928), (842, 758944), (1184, 539722), (1282, 498464), (1684, 379472), (2368, 269861), (2564, 249232), (3368, 189736), (5128, 124616), (6736, 94868), (10256, 62308), (13472, 47434), (15577, 41024), (20512, 31154), (23717, 26944)]