217022785

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{1439}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 309657600

約数和(自身を除く): 92634815

約数列:

[1, 5, 7, 31, 35, 139, 155, 217, 695, 973, 1085, 1439, 4309, 4865, 7195, 10073, 21545, 30163, 44609, 50365, 150815, 200021, 223045, 312263, 1000105, 1400147, 1561315, 6200651, 7000735, 31003255, 43404557, 217022785]

約数ペア:

[(1, 217022785), (5, 43404557), (7, 31003255), (31, 7000735), (35, 6200651), (139, 1561315), (155, 1400147), (217, 1000105), (695, 312263), (973, 223045), (1085, 200021), (1439, 150815), (4309, 50365), (4865, 44609), (7195, 30163), (10073, 21545)]