257867710

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 495331200

約数和(自身を除く): 237463490

約数列:

[1, 2, 5, 10, 29, 58, 89, 97, 103, 145, 178, 194, 206, 290, 445, 485, 515, 890, 970, 1030, 2581, 2813, 2987, 5162, 5626, 5974, 8633, 9167, 9991, 12905, 14065, 14935, 17266, 18334, 19982, 25810, 28130, 29870, 43165, 45835, 49955, 86330, 91670, 99910, 250357, 265843, 289739, 500714, 531686, 579478, 889199, 1251785, 1329215, 1448695, 1778398, 2503570, 2658430, 2897390, 4445995, 8891990, 25786771, 51573542, 128933855, 257867710]

約数ペア:

[(1, 257867710), (2, 128933855), (5, 51573542), (10, 25786771), (29, 8891990), (58, 4445995), (89, 2897390), (97, 2658430), (103, 2503570), (145, 1778398), (178, 1448695), (194, 1329215), (206, 1251785), (290, 889199), (445, 579478), (485, 531686), (515, 500714), (890, 289739), (970, 265843), (1030, 250357), (2581, 99910), (2813, 91670), (2987, 86330), (5162, 49955), (5626, 45835), (5974, 43165), (8633, 29870), (9167, 28130), (9991, 25810), (12905, 19982), (14065, 18334), (14935, 17266)]