20991362

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1106

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17577598

約数列:

[1, 2, 7, 14, 17, 34, 89, 119, 178, 238, 623, 991, 1246, 1513, 1982, 3026, 6937, 10591, 13874, 16847, 21182, 33694, 88199, 117929, 176398, 235858, 617393, 1234786, 1499383, 2998766, 10495681, 20991362]

約数ペア:

[(1, 20991362), (2, 10495681), (7, 2998766), (14, 1499383), (17, 1234786), (34, 617393), (89, 235858), (119, 176398), (178, 117929), (238, 88199), (623, 33694), (991, 21182), (1246, 16847), (1513, 13874), (1982, 10591), (3026, 6937)]