19638190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 42964992

約数和(自身を除く): 23326802

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 443, 682, 715, 806, 886, 1430, 1705, 2015, 2215, 3410, 4030, 4430, 4433, 4873, 5759, 8866, 9746, 11518, 13733, 22165, 24365, 27466, 28795, 44330, 48730, 57590, 63349, 68665, 126698, 137330, 151063, 178529, 302126, 316745, 357058, 633490, 755315, 892645, 1510630, 1785290, 1963819, 3927638, 9819095, 19638190]

約数ペア:

[(1, 19638190), (2, 9819095), (5, 3927638), (10, 1963819), (11, 1785290), (13, 1510630), (22, 892645), (26, 755315), (31, 633490), (55, 357058), (62, 316745), (65, 302126), (110, 178529), (130, 151063), (143, 137330), (155, 126698), (286, 68665), (310, 63349), (341, 57590), (403, 48730), (443, 44330), (682, 28795), (715, 27466), (806, 24365), (886, 22165), (1430, 13733), (1705, 11518), (2015, 9746), (2215, 8866), (3410, 5759), (4030, 4873), (4430, 4433)]