257258300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197891}}^1$

素因数の和:197918

約数の個数: 36

約数和(自身を含む): 601195896

約数和(自身を除く): 343937596

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 197891, 395782, 791564, 989455, 1978910, 2572583, 3957820, 4947275, 5145166, 9894550, 10290332, 12862915, 19789100, 25725830, 51451660, 64314575, 128629150, 257258300]

約数ペア:

[(1, 257258300), (2, 128629150), (4, 64314575), (5, 51451660), (10, 25725830), (13, 19789100), (20, 12862915), (25, 10290332), (26, 9894550), (50, 5145166), (52, 4947275), (65, 3957820), (100, 2572583), (130, 1978910), (260, 989455), (325, 791564), (650, 395782), (1300, 197891)]