256102420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{261329}}^1$

素因数の和:261352

約数の個数: 36

約数和(自身を含む): 625624020

約数和(自身を除く): 369521600

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 261329, 522658, 1045316, 1306645, 1829303, 2613290, 3658606, 5226580, 7317212, 9146515, 12805121, 18293030, 25610242, 36586060, 51220484, 64025605, 128051210, 256102420]

約数ペア:

[(1, 256102420), (2, 128051210), (4, 64025605), (5, 51220484), (7, 36586060), (10, 25610242), (14, 18293030), (20, 12805121), (28, 9146515), (35, 7317212), (49, 5226580), (70, 3658606), (98, 2613290), (140, 1829303), (196, 1306645), (245, 1045316), (490, 522658), (980, 261329)]