139130140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{78163}}^1$

素因数の和:78261

約数の個数: 24

約数和(自身を含む): 295459920

約数和(自身を除く): 156329780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 78163, 156326, 312652, 390815, 781630, 1563260, 6956507, 13913014, 27826028, 34782535, 69565070, 139130140]

約数ペア:

[(1, 139130140), (2, 69565070), (4, 34782535), (5, 27826028), (10, 13913014), (20, 6956507), (89, 1563260), (178, 781630), (356, 390815), (445, 312652), (890, 156326), (1780, 78163)]