19945029

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 10899771

約数列:

[1, 3, 13, 17, 39, 51, 67, 201, 221, 449, 663, 871, 1139, 1347, 2613, 3417, 5837, 7633, 14807, 17511, 22899, 30083, 44421, 90249, 99229, 297687, 391079, 511411, 1173237, 1534233, 6648343, 19945029]

約数ペア:

[(1, 19945029), (3, 6648343), (13, 1534233), (17, 1173237), (39, 511411), (51, 391079), (67, 297687), (201, 99229), (221, 90249), (449, 44421), (663, 30083), (871, 22899), (1139, 17511), (1347, 14807), (2613, 7633), (3417, 5837)]