19996431

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{823}}^1$

素因数の和:935

約数の個数: 32

約数和(自身を含む): 33223680

約数和(自身を除く): 13227249

約数列:

[1, 3, 7, 13, 21, 39, 89, 91, 267, 273, 623, 823, 1157, 1869, 2469, 3471, 5761, 8099, 10699, 17283, 24297, 32097, 73247, 74893, 219741, 224679, 512729, 952211, 1538187, 2856633, 6665477, 19996431]

約数ペア:

[(1, 19996431), (3, 6665477), (7, 2856633), (13, 1538187), (21, 952211), (39, 512729), (89, 224679), (91, 219741), (267, 74893), (273, 73247), (623, 32097), (823, 24297), (1157, 17283), (1869, 10699), (2469, 8099), (3471, 5761)]