7100420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3989}}^1$

素因数の和:4087

約数の個数: 24

約数和(自身を含む): 15082200

約数和(自身を除く): 7981780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 3989, 7978, 15956, 19945, 39890, 79780, 355021, 710042, 1420084, 1775105, 3550210, 7100420]

約数ペア:

[(1, 7100420), (2, 3550210), (4, 1775105), (5, 1420084), (10, 710042), (20, 355021), (89, 79780), (178, 39890), (356, 19945), (445, 15956), (890, 7978), (1780, 3989)]