21617804

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:426

約数の個数: 36

約数和(自身を含む): 41473656

約数和(自身を除く): 19855852

約数列:

[1, 2, 4, 13, 26, 52, 113, 169, 226, 283, 338, 452, 566, 676, 1132, 1469, 2938, 3679, 5876, 7358, 14716, 19097, 31979, 38194, 47827, 63958, 76388, 95654, 127916, 191308, 415727, 831454, 1662908, 5404451, 10808902, 21617804]

約数ペア:

[(1, 21617804), (2, 10808902), (4, 5404451), (13, 1662908), (26, 831454), (52, 415727), (113, 191308), (169, 127916), (226, 95654), (283, 76388), (338, 63958), (452, 47827), (566, 38194), (676, 31979), (1132, 19097), (1469, 14716), (2938, 7358), (3679, 5876)]