16538920

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1321}}^1$

素因数の和:1645

約数の個数: 32

約数和(自身を含む): 37359720

約数和(自身を除く): 20820800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1321, 1565, 2504, 2642, 3130, 5284, 6260, 6605, 10568, 12520, 13210, 26420, 52840, 413473, 826946, 1653892, 2067365, 3307784, 4134730, 8269460, 16538920]

約数ペア:

[(1, 16538920), (2, 8269460), (4, 4134730), (5, 3307784), (8, 2067365), (10, 1653892), (20, 826946), (40, 413473), (313, 52840), (626, 26420), (1252, 13210), (1321, 12520), (1565, 10568), (2504, 6605), (2642, 6260), (3130, 5284)]