18905540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 42069888

約数和(自身を除く): 23164348

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 73, 92, 115, 146, 230, 292, 365, 460, 563, 730, 1126, 1460, 1679, 2252, 2815, 3358, 5630, 6716, 8395, 11260, 12949, 16790, 25898, 33580, 41099, 51796, 64745, 82198, 129490, 164396, 205495, 258980, 410990, 821980, 945277, 1890554, 3781108, 4726385, 9452770, 18905540]

約数ペア:

[(1, 18905540), (2, 9452770), (4, 4726385), (5, 3781108), (10, 1890554), (20, 945277), (23, 821980), (46, 410990), (73, 258980), (92, 205495), (115, 164396), (146, 129490), (230, 82198), (292, 64745), (365, 51796), (460, 41099), (563, 33580), (730, 25898), (1126, 16790), (1460, 12949), (1679, 11260), (2252, 8395), (2815, 6716), (3358, 5630)]