20679460

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14563}}^1$

素因数の和:14643

約数の個数: 24

約数和(自身を含む): 44041536

約数和(自身を除く): 23362076

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14563, 29126, 58252, 72815, 145630, 291260, 1033973, 2067946, 4135892, 5169865, 10339730, 20679460]

約数ペア:

[(1, 20679460), (2, 10339730), (4, 5169865), (5, 4135892), (10, 2067946), (20, 1033973), (71, 291260), (142, 145630), (284, 72815), (355, 58252), (710, 29126), (1420, 14563)]