72340640

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1609}}^1$

素因数の和:1905

約数の個数: 48

約数和(自身を含む): 171619560

約数和(自身を除く): 99278920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 562, 1124, 1405, 1609, 2248, 2810, 3218, 4496, 5620, 6436, 8045, 8992, 11240, 12872, 16090, 22480, 25744, 32180, 44960, 51488, 64360, 128720, 257440, 452129, 904258, 1808516, 2260645, 3617032, 4521290, 7234064, 9042580, 14468128, 18085160, 36170320, 72340640]

約数ペア:

[(1, 72340640), (2, 36170320), (4, 18085160), (5, 14468128), (8, 9042580), (10, 7234064), (16, 4521290), (20, 3617032), (32, 2260645), (40, 1808516), (80, 904258), (160, 452129), (281, 257440), (562, 128720), (1124, 64360), (1405, 51488), (1609, 44960), (2248, 32180), (2810, 25744), (3218, 22480), (4496, 16090), (5620, 12872), (6436, 11240), (8045, 8992)]