888945020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{54403}}^1$

素因数の和:54474

約数の個数: 48

約数和(自身を含む): 2010771840

約数和(自身を除く): 1121826820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 3268, 4085, 8170, 16340, 54403, 108806, 217612, 272015, 544030, 1033657, 1088060, 2067314, 2339329, 4134628, 4678658, 5168285, 9357316, 10336570, 11696645, 20673140, 23393290, 44447251, 46786580, 88894502, 177789004, 222236255, 444472510, 888945020]

約数ペア:

[(1, 888945020), (2, 444472510), (4, 222236255), (5, 177789004), (10, 88894502), (19, 46786580), (20, 44447251), (38, 23393290), (43, 20673140), (76, 11696645), (86, 10336570), (95, 9357316), (172, 5168285), (190, 4678658), (215, 4134628), (380, 2339329), (430, 2067314), (817, 1088060), (860, 1033657), (1634, 544030), (3268, 272015), (4085, 217612), (8170, 108806), (16340, 54403)]