19881562

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7369}}^1$

素因数の和:7461

約数の個数: 16

約数和(自身を含む): 31838400

約数和(自身を除く): 11956838

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 7369, 14738, 140011, 280022, 523199, 1046398, 9940781, 19881562]

約数ペア:

[(1, 19881562), (2, 9940781), (19, 1046398), (38, 523199), (71, 280022), (142, 140011), (1349, 14738), (2698, 7369)]