254138829

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1\times {\mathrm{863}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 399237120

約数和(自身を除く): 145098291

約数列:

[1, 3, 7, 21, 37, 111, 259, 379, 777, 863, 1137, 2589, 2653, 6041, 7959, 14023, 18123, 31931, 42069, 95793, 98161, 223517, 294483, 327077, 670551, 981231, 2289539, 6868617, 12101849, 36305547, 84712943, 254138829]

約数ペア:

[(1, 254138829), (3, 84712943), (7, 36305547), (21, 12101849), (37, 6868617), (111, 2289539), (259, 981231), (379, 670551), (777, 327077), (863, 294483), (1137, 223517), (2589, 98161), (2653, 95793), (6041, 42069), (7959, 31931), (14023, 18123)]