16819640

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{739}}^1$

素因数の和:1319

約数の個数: 32

約数和(自身を含む): 37962000

約数和(自身を除く): 21142360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 739, 1138, 1478, 2276, 2845, 2956, 3695, 4552, 5690, 5912, 7390, 11380, 14780, 22760, 29560, 420491, 840982, 1681964, 2102455, 3363928, 4204910, 8409820, 16819640]

約数ペア:

[(1, 16819640), (2, 8409820), (4, 4204910), (5, 3363928), (8, 2102455), (10, 1681964), (20, 840982), (40, 420491), (569, 29560), (739, 22760), (1138, 14780), (1478, 11380), (2276, 7390), (2845, 5912), (2956, 5690), (3695, 4552)]