21812492

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:858

約数の個数: 36

約数和(自身を含む): 42395976

約数和(自身を除く): 20583484

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 169, 338, 533, 676, 787, 1066, 1574, 2132, 3148, 6929, 10231, 13858, 20462, 27716, 32267, 40924, 64534, 129068, 133003, 266006, 419471, 532012, 838942, 1677884, 5453123, 10906246, 21812492]

約数ペア:

[(1, 21812492), (2, 10906246), (4, 5453123), (13, 1677884), (26, 838942), (41, 532012), (52, 419471), (82, 266006), (164, 133003), (169, 129068), (338, 64534), (533, 40924), (676, 32267), (787, 27716), (1066, 20462), (1574, 13858), (2132, 10231), (3148, 6929)]