84990140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{249971}}^1$

素因数の和:249997

約数の個数: 24

約数和(自身を含む): 188978832

約数和(自身を除く): 103988692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 249971, 499942, 999884, 1249855, 2499710, 4249507, 4999420, 8499014, 16998028, 21247535, 42495070, 84990140]

約数ペア:

[(1, 84990140), (2, 42495070), (4, 21247535), (5, 16998028), (10, 8499014), (17, 4999420), (20, 4249507), (34, 2499710), (68, 1249855), (85, 999884), (170, 499942), (340, 249971)]