19948761

素因数分解:

$3^4\times 7^1\times {\mathrm{151}}^1\times {\mathrm{233}}^1$

素因数の和:403

約数の個数: 40

約数和(自身を含む): 34429824

約数和(自身を除く): 14481063

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 151, 189, 233, 453, 567, 699, 1057, 1359, 1631, 2097, 3171, 4077, 4893, 6291, 9513, 12231, 14679, 18873, 28539, 35183, 44037, 85617, 105549, 132111, 246281, 316647, 738843, 949941, 2216529, 2849823, 6649587, 19948761]

約数ペア:

[(1, 19948761), (3, 6649587), (7, 2849823), (9, 2216529), (21, 949941), (27, 738843), (63, 316647), (81, 246281), (151, 132111), (189, 105549), (233, 85617), (453, 44037), (567, 35183), (699, 28539), (1057, 18873), (1359, 14679), (1631, 12231), (2097, 9513), (3171, 6291), (4077, 4893)]