66400420

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{12251}}^1$

素因数の和:12531

約数の個数: 24

約数和(自身を含む): 139966848

約数和(自身を除く): 73566428

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 5420, 12251, 24502, 49004, 61255, 122510, 245020, 3320021, 6640042, 13280084, 16600105, 33200210, 66400420]

約数ペア:

[(1, 66400420), (2, 33200210), (4, 16600105), (5, 13280084), (10, 6640042), (20, 3320021), (271, 245020), (542, 122510), (1084, 61255), (1355, 49004), (2710, 24502), (5420, 12251)]