20637490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 40737672

約数和(自身を除く): 20100182

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 170, 185, 193, 289, 370, 386, 578, 629, 965, 1258, 1445, 1930, 2890, 3145, 3281, 6290, 6562, 7141, 10693, 14282, 16405, 21386, 32810, 35705, 53465, 55777, 71410, 106930, 111554, 121397, 242794, 278885, 557770, 606985, 1213970, 2063749, 4127498, 10318745, 20637490]

約数ペア:

[(1, 20637490), (2, 10318745), (5, 4127498), (10, 2063749), (17, 1213970), (34, 606985), (37, 557770), (74, 278885), (85, 242794), (170, 121397), (185, 111554), (193, 106930), (289, 71410), (370, 55777), (386, 53465), (578, 35705), (629, 32810), (965, 21386), (1258, 16405), (1445, 14282), (1930, 10693), (2890, 7141), (3145, 6562), (3281, 6290)]