21007040

素因数分解:

$2^6\times 5^1\times {\mathrm{65647}}^1$

素因数の和:65664

約数の個数: 28

約数和(自身を含む): 50023776

約数和(自身を除く): 29016736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65647, 131294, 262588, 328235, 525176, 656470, 1050352, 1312940, 2100704, 2625880, 4201408, 5251760, 10503520, 21007040]

約数ペア:

[(1, 21007040), (2, 10503520), (4, 5251760), (5, 4201408), (8, 2625880), (10, 2100704), (16, 1312940), (20, 1050352), (32, 656470), (40, 525176), (64, 328235), (80, 262588), (160, 131294), (320, 65647)]