1801520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3217}}^1$

素因数の和:3237

約数の個数: 40

約数和(自身を含む): 4788384

約数和(自身を除く): 2986864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3217, 6434, 12868, 16085, 22519, 25736, 32170, 45038, 51472, 64340, 90076, 112595, 128680, 180152, 225190, 257360, 360304, 450380, 900760, 1801520]

約数ペア:

[(1, 1801520), (2, 900760), (4, 450380), (5, 360304), (7, 257360), (8, 225190), (10, 180152), (14, 128680), (16, 112595), (20, 90076), (28, 64340), (35, 51472), (40, 45038), (56, 32170), (70, 25736), (80, 22519), (112, 16085), (140, 12868), (280, 6434), (560, 3217)]