2018810480

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{615491}}^1$

素因数の和:615545

約数の個数: 40

約数和(自身を含む): 4808223504

約数和(自身を除く): 2789413024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 615491, 1230982, 2461964, 3077455, 4923928, 6154910, 9847856, 12309820, 24619640, 25235131, 49239280, 50470262, 100940524, 126175655, 201881048, 252351310, 403762096, 504702620, 1009405240, 2018810480]

約数ペア:

[(1, 2018810480), (2, 1009405240), (4, 504702620), (5, 403762096), (8, 252351310), (10, 201881048), (16, 126175655), (20, 100940524), (40, 50470262), (41, 49239280), (80, 25235131), (82, 24619640), (164, 12309820), (205, 9847856), (328, 6154910), (410, 4923928), (656, 3077455), (820, 2461964), (1640, 1230982), (3280, 615491)]