81165340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{1279}}^1$

素因数の和:1474

約数の個数: 48

約数和(自身を含む): 180633600

約数和(自身を除く): 99468260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 167, 190, 334, 380, 668, 835, 1279, 1670, 2558, 3173, 3340, 5116, 6346, 6395, 12692, 12790, 15865, 24301, 25580, 31730, 48602, 63460, 97204, 121505, 213593, 243010, 427186, 486020, 854372, 1067965, 2135930, 4058267, 4271860, 8116534, 16233068, 20291335, 40582670, 81165340]

約数ペア:

[(1, 81165340), (2, 40582670), (4, 20291335), (5, 16233068), (10, 8116534), (19, 4271860), (20, 4058267), (38, 2135930), (76, 1067965), (95, 854372), (167, 486020), (190, 427186), (334, 243010), (380, 213593), (668, 121505), (835, 97204), (1279, 63460), (1670, 48602), (2558, 31730), (3173, 25580), (3340, 24301), (5116, 15865), (6346, 12790), (6395, 12692)]