20558704

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:449

約数の個数: 40

約数和(自身を含む): 41525120

約数和(自身を除く): 20966416

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 181, 229, 248, 362, 458, 496, 724, 916, 1448, 1832, 2896, 3664, 5611, 7099, 11222, 14198, 22444, 28396, 41449, 44888, 56792, 82898, 89776, 113584, 165796, 331592, 663184, 1284919, 2569838, 5139676, 10279352, 20558704]

約数ペア:

[(1, 20558704), (2, 10279352), (4, 5139676), (8, 2569838), (16, 1284919), (31, 663184), (62, 331592), (124, 165796), (181, 113584), (229, 89776), (248, 82898), (362, 56792), (458, 44888), (496, 41449), (724, 28396), (916, 22444), (1448, 14198), (1832, 11222), (2896, 7099), (3664, 5611)]