256564240

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:508

約数の個数: 80

約数和(自身を含む): 609911856

約数和(自身を除く): 353347616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 113, 202, 226, 281, 404, 452, 505, 562, 565, 808, 904, 1010, 1124, 1130, 1405, 1616, 1808, 2020, 2248, 2260, 2810, 4040, 4496, 4520, 5620, 8080, 9040, 11240, 11413, 22480, 22826, 28381, 31753, 45652, 56762, 57065, 63506, 91304, 113524, 114130, 127012, 141905, 158765, 182608, 227048, 228260, 254024, 283810, 317530, 454096, 456520, 508048, 567620, 635060, 913040, 1135240, 1270120, 2270480, 2540240, 3207053, 6414106, 12828212, 16035265, 25656424, 32070530, 51312848, 64141060, 128282120, 256564240]

約数ペア:

[(1, 256564240), (2, 128282120), (4, 64141060), (5, 51312848), (8, 32070530), (10, 25656424), (16, 16035265), (20, 12828212), (40, 6414106), (80, 3207053), (101, 2540240), (113, 2270480), (202, 1270120), (226, 1135240), (281, 913040), (404, 635060), (452, 567620), (505, 508048), (562, 456520), (565, 454096), (808, 317530), (904, 283810), (1010, 254024), (1124, 228260), (1130, 227048), (1405, 182608), (1616, 158765), (1808, 141905), (2020, 127012), (2248, 114130), (2260, 113524), (2810, 91304), (4040, 63506), (4496, 57065), (4520, 56762), (5620, 45652), (8080, 31753), (9040, 28381), (11240, 22826), (11413, 22480)]