816574040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{1601}}^1$

素因数の和:1964

約数の個数: 64

約数和(自身を含む): 1889334720

約数和(自身を除く): 1072760680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 311, 328, 410, 622, 820, 1244, 1555, 1601, 1640, 2488, 3110, 3202, 6220, 6404, 8005, 12440, 12751, 12808, 16010, 25502, 32020, 51004, 63755, 64040, 65641, 102008, 127510, 131282, 255020, 262564, 328205, 497911, 510040, 525128, 656410, 995822, 1312820, 1991644, 2489555, 2625640, 3983288, 4979110, 9958220, 19916440, 20414351, 40828702, 81657404, 102071755, 163314808, 204143510, 408287020, 816574040]

約数ペア:

[(1, 816574040), (2, 408287020), (4, 204143510), (5, 163314808), (8, 102071755), (10, 81657404), (20, 40828702), (40, 20414351), (41, 19916440), (82, 9958220), (164, 4979110), (205, 3983288), (311, 2625640), (328, 2489555), (410, 1991644), (622, 1312820), (820, 995822), (1244, 656410), (1555, 525128), (1601, 510040), (1640, 497911), (2488, 328205), (3110, 262564), (3202, 255020), (6220, 131282), (6404, 127510), (8005, 102008), (12440, 65641), (12751, 64040), (12808, 63755), (16010, 51004), (25502, 32020)]