66750890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{419}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 122472000

約数和(自身を除く): 55721110

約数列:

[1, 2, 5, 10, 89, 178, 179, 358, 419, 445, 838, 890, 895, 1790, 2095, 4190, 15931, 31862, 37291, 74582, 75001, 79655, 150002, 159310, 186455, 372910, 375005, 750010, 6675089, 13350178, 33375445, 66750890]

約数ペア:

[(1, 66750890), (2, 33375445), (5, 13350178), (10, 6675089), (89, 750010), (178, 375005), (179, 372910), (358, 186455), (419, 159310), (445, 150002), (838, 79655), (890, 75001), (895, 74582), (1790, 37291), (2095, 31862), (4190, 15931)]