779577980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{983}}^1\times {\mathrm{2087}}^1$

素因数の和:3098

約数の個数: 48

約数和(自身を含む): 1725857280

約数和(自身を除く): 946279300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 983, 1966, 2087, 3932, 4174, 4915, 8348, 9830, 10435, 18677, 19660, 20870, 37354, 39653, 41740, 74708, 79306, 93385, 158612, 186770, 198265, 373540, 396530, 793060, 2051521, 4103042, 8206084, 10257605, 20515210, 38978899, 41030420, 77957798, 155915596, 194894495, 389788990, 779577980]

約数ペア:

[(1, 779577980), (2, 389788990), (4, 194894495), (5, 155915596), (10, 77957798), (19, 41030420), (20, 38978899), (38, 20515210), (76, 10257605), (95, 8206084), (190, 4103042), (380, 2051521), (983, 793060), (1966, 396530), (2087, 373540), (3932, 198265), (4174, 186770), (4915, 158612), (8348, 93385), (9830, 79306), (10435, 74708), (18677, 41740), (19660, 39653), (20870, 37354)]