20782268

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{433}}^1$

素因数の和:534

約数の個数: 36

約数和(自身を含む): 40028688

約数和(自身を除く): 19246420

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 169, 284, 338, 433, 676, 866, 923, 1732, 1846, 3692, 5629, 11258, 11999, 22516, 23998, 30743, 47996, 61486, 73177, 122972, 146354, 292708, 399659, 799318, 1598636, 5195567, 10391134, 20782268]

約数ペア:

[(1, 20782268), (2, 10391134), (4, 5195567), (13, 1598636), (26, 799318), (52, 399659), (71, 292708), (142, 146354), (169, 122972), (284, 73177), (338, 61486), (433, 47996), (676, 30743), (866, 23998), (923, 22516), (1732, 11999), (1846, 11258), (3692, 5629)]