19458980

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4363}}^1$

素因数の和:4595

約数の個数: 24

約数和(自身を含む): 41056512

約数和(自身を除く): 21597532

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4363, 4460, 8726, 17452, 21815, 43630, 87260, 972949, 1945898, 3891796, 4864745, 9729490, 19458980]

約数ペア:

[(1, 19458980), (2, 9729490), (4, 4864745), (5, 3891796), (10, 1945898), (20, 972949), (223, 87260), (446, 43630), (892, 21815), (1115, 17452), (2230, 8726), (4363, 4460)]