221745993

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{148723}}^1$

素因数の和:148804

約数の個数: 16

約数和(自身を含む): 342660096

約数和(自身を除く): 120914103

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 148723, 446169, 1041061, 3123183, 10559333, 31677999, 73915331, 221745993]

約数ペア:

[(1, 221745993), (3, 73915331), (7, 31677999), (21, 10559333), (71, 3123183), (213, 1041061), (497, 446169), (1491, 148723)]