20121164

素因数分解:

$2^2\times 7^2\times {\mathrm{251}}^1\times {\mathrm{409}}^1$

素因数の和:678

約数の個数: 36

約数和(自身を含む): 41224680

約数和(自身を除く): 21103516

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 251, 409, 502, 818, 1004, 1636, 1757, 2863, 3514, 5726, 7028, 11452, 12299, 20041, 24598, 40082, 49196, 80164, 102659, 205318, 410636, 718613, 1437226, 2874452, 5030291, 10060582, 20121164]

約数ペア:

[(1, 20121164), (2, 10060582), (4, 5030291), (7, 2874452), (14, 1437226), (28, 718613), (49, 410636), (98, 205318), (196, 102659), (251, 80164), (409, 49196), (502, 40082), (818, 24598), (1004, 20041), (1636, 12299), (1757, 11452), (2863, 7028), (3514, 5726)]