664560800

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{20261}}^1$

素因数の和:20322

約数の個数: 72

約数和(自身を含む): 1662010812

約数和(自身を除く): 997450012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 160, 164, 200, 205, 328, 400, 410, 656, 800, 820, 1025, 1312, 1640, 2050, 3280, 4100, 6560, 8200, 16400, 20261, 32800, 40522, 81044, 101305, 162088, 202610, 324176, 405220, 506525, 648352, 810440, 830701, 1013050, 1620880, 1661402, 2026100, 3241760, 3322804, 4052200, 4153505, 6645608, 8104400, 8307010, 13291216, 16208800, 16614020, 20767525, 26582432, 33228040, 41535050, 66456080, 83070100, 132912160, 166140200, 332280400, 664560800]

約数ペア:

[(1, 664560800), (2, 332280400), (4, 166140200), (5, 132912160), (8, 83070100), (10, 66456080), (16, 41535050), (20, 33228040), (25, 26582432), (32, 20767525), (40, 16614020), (41, 16208800), (50, 13291216), (80, 8307010), (82, 8104400), (100, 6645608), (160, 4153505), (164, 4052200), (200, 3322804), (205, 3241760), (328, 2026100), (400, 1661402), (410, 1620880), (656, 1013050), (800, 830701), (820, 810440), (1025, 648352), (1312, 506525), (1640, 405220), (2050, 324176), (3280, 202610), (4100, 162088), (6560, 101305), (8200, 81044), (16400, 40522), (20261, 32800)]