20591890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{1429}}^1$

素因数の和:1578

約数の個数: 32

約数和(自身を含む): 40772160

約数和(自身を除く): 20180270

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 131, 262, 655, 1310, 1429, 1441, 2858, 2882, 7145, 7205, 14290, 14410, 15719, 31438, 78595, 157190, 187199, 374398, 935995, 1871990, 2059189, 4118378, 10295945, 20591890]

約数ペア:

[(1, 20591890), (2, 10295945), (5, 4118378), (10, 2059189), (11, 1871990), (22, 935995), (55, 374398), (110, 187199), (131, 157190), (262, 78595), (655, 31438), (1310, 15719), (1429, 14410), (1441, 14290), (2858, 7205), (2882, 7145)]