406563280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{1619}}^1$

素因数の和:1748

約数の個数: 80

約数和(自身を含む): 981097920

約数和(自身を除く): 574534640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 73, 80, 86, 146, 172, 215, 292, 344, 365, 430, 584, 688, 730, 860, 1168, 1460, 1619, 1720, 2920, 3139, 3238, 3440, 5840, 6278, 6476, 8095, 12556, 12952, 15695, 16190, 25112, 25904, 31390, 32380, 50224, 62780, 64760, 69617, 118187, 125560, 129520, 139234, 236374, 251120, 278468, 348085, 472748, 556936, 590935, 696170, 945496, 1113872, 1181870, 1392340, 1890992, 2363740, 2784680, 4727480, 5082041, 5569360, 9454960, 10164082, 20328164, 25410205, 40656328, 50820410, 81312656, 101640820, 203281640, 406563280]

約数ペア:

[(1, 406563280), (2, 203281640), (4, 101640820), (5, 81312656), (8, 50820410), (10, 40656328), (16, 25410205), (20, 20328164), (40, 10164082), (43, 9454960), (73, 5569360), (80, 5082041), (86, 4727480), (146, 2784680), (172, 2363740), (215, 1890992), (292, 1392340), (344, 1181870), (365, 1113872), (430, 945496), (584, 696170), (688, 590935), (730, 556936), (860, 472748), (1168, 348085), (1460, 278468), (1619, 251120), (1720, 236374), (2920, 139234), (3139, 129520), (3238, 125560), (3440, 118187), (5840, 69617), (6278, 64760), (6476, 62780), (8095, 50224), (12556, 32380), (12952, 31390), (15695, 25904), (16190, 25112)]