279991010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 556416000

約数和(自身を除く): 276424990

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 137, 158, 199, 274, 395, 398, 685, 790, 995, 1027, 1370, 1781, 1990, 2054, 2587, 3562, 5135, 5174, 8905, 10270, 10823, 12935, 15721, 17810, 21646, 25870, 27263, 31442, 54115, 54526, 78605, 108230, 136315, 140699, 157210, 204373, 272630, 281398, 354419, 408746, 703495, 708838, 1021865, 1406990, 1772095, 2043730, 2153777, 3544190, 4307554, 10768885, 21537770, 27999101, 55998202, 139995505, 279991010]

約数ペア:

[(1, 279991010), (2, 139995505), (5, 55998202), (10, 27999101), (13, 21537770), (26, 10768885), (65, 4307554), (79, 3544190), (130, 2153777), (137, 2043730), (158, 1772095), (199, 1406990), (274, 1021865), (395, 708838), (398, 703495), (685, 408746), (790, 354419), (995, 281398), (1027, 272630), (1370, 204373), (1781, 157210), (1990, 140699), (2054, 136315), (2587, 108230), (3562, 78605), (5135, 54526), (5174, 54115), (8905, 31442), (10270, 27263), (10823, 25870), (12935, 21646), (15721, 17810)]