1281239425

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{677}}^1$

素因数の和:838

約数の個数: 48

約数和(自身を含む): 1735750512

約数和(自身を除く): 454511087

約数列:

[1, 5, 17, 25, 61, 73, 85, 305, 365, 425, 677, 1037, 1241, 1525, 1825, 3385, 4453, 5185, 6205, 11509, 16925, 22265, 25925, 31025, 41297, 49421, 57545, 75701, 111325, 206485, 247105, 287725, 378505, 702049, 840157, 1032425, 1235525, 1892525, 3014681, 3510245, 4200785, 15073405, 17551225, 21003925, 51249577, 75367025, 256247885, 1281239425]

約数ペア:

[(1, 1281239425), (5, 256247885), (17, 75367025), (25, 51249577), (61, 21003925), (73, 17551225), (85, 15073405), (305, 4200785), (365, 3510245), (425, 3014681), (677, 1892525), (1037, 1235525), (1241, 1032425), (1525, 840157), (1825, 702049), (3385, 378505), (4453, 287725), (5185, 247105), (6205, 206485), (11509, 111325), (16925, 75701), (22265, 57545), (25925, 49421), (31025, 41297)]