1259016520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1\times {\mathrm{1877}}^1$

素因数の和:2338

約数の個数: 64

約数和(自身を含む): 2910524400

約数和(自身を除く): 1651507880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 409, 410, 818, 820, 1636, 1640, 1877, 2045, 3272, 3754, 4090, 7508, 8180, 9385, 15016, 16360, 16769, 18770, 33538, 37540, 67076, 75080, 76957, 83845, 134152, 153914, 167690, 307828, 335380, 384785, 615656, 670760, 767693, 769570, 1535386, 1539140, 3070772, 3078280, 3838465, 6141544, 7676930, 15353860, 30707720, 31475413, 62950826, 125901652, 157377065, 251803304, 314754130, 629508260, 1259016520]

約数ペア:

[(1, 1259016520), (2, 629508260), (4, 314754130), (5, 251803304), (8, 157377065), (10, 125901652), (20, 62950826), (40, 31475413), (41, 30707720), (82, 15353860), (164, 7676930), (205, 6141544), (328, 3838465), (409, 3078280), (410, 3070772), (818, 1539140), (820, 1535386), (1636, 769570), (1640, 767693), (1877, 670760), (2045, 615656), (3272, 384785), (3754, 335380), (4090, 307828), (7508, 167690), (8180, 153914), (9385, 134152), (15016, 83845), (16360, 76957), (16769, 75080), (18770, 67076), (33538, 37540)]