21780290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10037}}^1$

素因数の和:10082

約数の個数: 32

約数和(自身を含む): 46255104

約数和(自身を除く): 24474814

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 10037, 20074, 50185, 70259, 100370, 140518, 311147, 351295, 622294, 702590, 1555735, 2178029, 3111470, 4356058, 10890145, 21780290]

約数ペア:

[(1, 21780290), (2, 10890145), (5, 4356058), (7, 3111470), (10, 2178029), (14, 1555735), (31, 702590), (35, 622294), (62, 351295), (70, 311147), (155, 140518), (217, 100370), (310, 70259), (434, 50185), (1085, 20074), (2170, 10037)]