19866928

素因数分解:

$2^4\times {\mathrm{37}}^2\times {\mathrm{907}}^1$

素因数の和:989

約数の個数: 30

約数和(自身を含む): 39604236

約数和(自身を除く): 19737308

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 907, 1369, 1814, 2738, 3628, 5476, 7256, 10952, 14512, 21904, 33559, 67118, 134236, 268472, 536944, 1241683, 2483366, 4966732, 9933464, 19866928]

約数ペア:

[(1, 19866928), (2, 9933464), (4, 4966732), (8, 2483366), (16, 1241683), (37, 536944), (74, 268472), (148, 134236), (296, 67118), (592, 33559), (907, 21904), (1369, 14512), (1814, 10952), (2738, 7256), (3628, 5476)]