20409753

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{74761}}^1$

素因数の和:74784

約数の個数: 16

約数和(自身を含む): 33493376

約数和(自身を除く): 13083623

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 74761, 224283, 523327, 971893, 1569981, 2915679, 6803251, 20409753]

約数ペア:

[(1, 20409753), (3, 6803251), (7, 2915679), (13, 1569981), (21, 971893), (39, 523327), (91, 224283), (273, 74761)]