21511930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{269}}^1\times {\mathrm{727}}^1$

素因数の和:1014

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 20945030

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 269, 538, 727, 1345, 1454, 2690, 2959, 3635, 5918, 7270, 7997, 14795, 15994, 29590, 39985, 79970, 195563, 391126, 977815, 1955630, 2151193, 4302386, 10755965, 21511930]

約数ペア:

[(1, 21511930), (2, 10755965), (5, 4302386), (10, 2151193), (11, 1955630), (22, 977815), (55, 391126), (110, 195563), (269, 79970), (538, 39985), (727, 29590), (1345, 15994), (1454, 14795), (2690, 7997), (2959, 7270), (3635, 5918)]