20218746980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^2\times {\mathrm{58909}}^1$

素因数の和:59180

約数の個数: 36

約数和(自身を含む): 42786686460

約数和(自身を除く): 22567939480

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 17161, 34322, 58909, 68644, 85805, 117818, 171610, 235636, 294545, 343220, 589090, 1178180, 7717079, 15434158, 30868316, 38585395, 77170790, 154341580, 1010937349, 2021874698, 4043749396, 5054686745, 10109373490, 20218746980]

約数ペア:

[(1, 20218746980), (2, 10109373490), (4, 5054686745), (5, 4043749396), (10, 2021874698), (20, 1010937349), (131, 154341580), (262, 77170790), (524, 38585395), (655, 30868316), (1310, 15434158), (2620, 7717079), (17161, 1178180), (34322, 589090), (58909, 343220), (68644, 294545), (85805, 235636), (117818, 171610)]