20146580

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23882860

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 311, 316, 395, 410, 622, 790, 820, 1244, 1555, 1580, 3110, 3239, 6220, 6478, 12751, 12956, 16195, 24569, 25502, 32390, 49138, 51004, 63755, 64780, 98276, 122845, 127510, 245690, 255020, 491380, 1007329, 2014658, 4029316, 5036645, 10073290, 20146580]

約数ペア:

[(1, 20146580), (2, 10073290), (4, 5036645), (5, 4029316), (10, 2014658), (20, 1007329), (41, 491380), (79, 255020), (82, 245690), (158, 127510), (164, 122845), (205, 98276), (311, 64780), (316, 63755), (395, 51004), (410, 49138), (622, 32390), (790, 25502), (820, 24569), (1244, 16195), (1555, 12956), (1580, 12751), (3110, 6478), (3239, 6220)]