40804780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{643}}^1$

素因数の和:838

約数の個数: 48

約数和(自身を含む): 90881280

約数和(自身を除く): 50076500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 167, 190, 334, 380, 643, 668, 835, 1286, 1670, 2572, 3173, 3215, 3340, 6346, 6430, 12217, 12692, 12860, 15865, 24434, 31730, 48868, 61085, 63460, 107381, 122170, 214762, 244340, 429524, 536905, 1073810, 2040239, 2147620, 4080478, 8160956, 10201195, 20402390, 40804780]

約数ペア:

[(1, 40804780), (2, 20402390), (4, 10201195), (5, 8160956), (10, 4080478), (19, 2147620), (20, 2040239), (38, 1073810), (76, 536905), (95, 429524), (167, 244340), (190, 214762), (334, 122170), (380, 107381), (643, 63460), (668, 61085), (835, 48868), (1286, 31730), (1670, 24434), (2572, 15865), (3173, 12860), (3215, 12692), (3340, 12217), (6346, 6430)]