646789760

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^2$

素因数の和:374

約数の個数: 96

約数和(自身を含む): 1594097820

約数和(自身を除く): 947308060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 157, 160, 164, 205, 314, 320, 328, 410, 628, 640, 656, 785, 820, 1256, 1312, 1570, 1640, 2512, 2624, 3140, 3280, 5024, 5248, 6280, 6437, 6560, 10048, 12560, 12874, 13120, 20096, 24649, 25120, 25748, 26240, 32185, 49298, 50240, 51496, 64370, 98596, 100480, 102992, 123245, 128740, 197192, 205984, 246490, 257480, 394384, 411968, 492980, 514960, 788768, 823936, 985960, 1010609, 1029920, 1577536, 1971920, 2021218, 2059840, 3155072, 3943840, 4042436, 4119680, 5053045, 7887680, 8084872, 10106090, 15775360, 16169744, 20212180, 32339488, 40424360, 64678976, 80848720, 129357952, 161697440, 323394880, 646789760]

約数ペア:

[(1, 646789760), (2, 323394880), (4, 161697440), (5, 129357952), (8, 80848720), (10, 64678976), (16, 40424360), (20, 32339488), (32, 20212180), (40, 16169744), (41, 15775360), (64, 10106090), (80, 8084872), (82, 7887680), (128, 5053045), (157, 4119680), (160, 4042436), (164, 3943840), (205, 3155072), (314, 2059840), (320, 2021218), (328, 1971920), (410, 1577536), (628, 1029920), (640, 1010609), (656, 985960), (785, 823936), (820, 788768), (1256, 514960), (1312, 492980), (1570, 411968), (1640, 394384), (2512, 257480), (2624, 246490), (3140, 205984), (3280, 197192), (5024, 128740), (5248, 123245), (6280, 102992), (6437, 100480), (6560, 98596), (10048, 64370), (12560, 51496), (12874, 50240), (13120, 49298), (20096, 32185), (24649, 26240), (25120, 25748)]