20178356860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1\times {\mathrm{36877}}^1$

素因数の和:37246

約数の個数: 48

約数和(自身を含む): 42934842720

約数和(自身を除く): 22756485860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 251, 436, 502, 545, 1004, 1090, 1255, 2180, 2510, 5020, 27359, 36877, 54718, 73754, 109436, 136795, 147508, 184385, 273590, 368770, 547180, 737540, 4019593, 8039186, 9256127, 16078372, 18512254, 20097965, 37024508, 40195930, 46280635, 80391860, 92561270, 185122540, 1008917843, 2017835686, 4035671372, 5044589215, 10089178430, 20178356860]

約数ペア:

[(1, 20178356860), (2, 10089178430), (4, 5044589215), (5, 4035671372), (10, 2017835686), (20, 1008917843), (109, 185122540), (218, 92561270), (251, 80391860), (436, 46280635), (502, 40195930), (545, 37024508), (1004, 20097965), (1090, 18512254), (1255, 16078372), (2180, 9256127), (2510, 8039186), (5020, 4019593), (27359, 737540), (36877, 547180), (54718, 368770), (73754, 273590), (109436, 184385), (136795, 147508)]