12980600

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 30935520

約数和(自身を除く): 17954920

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1583, 1640, 2050, 3166, 4100, 6332, 7915, 8200, 12664, 15830, 31660, 39575, 63320, 64903, 79150, 129806, 158300, 259612, 316600, 324515, 519224, 649030, 1298060, 1622575, 2596120, 3245150, 6490300, 12980600]

約数ペア:

[(1, 12980600), (2, 6490300), (4, 3245150), (5, 2596120), (8, 1622575), (10, 1298060), (20, 649030), (25, 519224), (40, 324515), (41, 316600), (50, 259612), (82, 158300), (100, 129806), (164, 79150), (200, 64903), (205, 63320), (328, 39575), (410, 31660), (820, 15830), (1025, 12664), (1583, 8200), (1640, 7915), (2050, 6332), (3166, 4100)]