21318663

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 30729472

約数和(自身を除く): 9410809

約数列:

[1, 3, 17, 51, 67, 201, 289, 367, 867, 1101, 1139, 3417, 6239, 18717, 19363, 24589, 58089, 73767, 106063, 318189, 418013, 1254039, 7106221, 21318663]

約数ペア:

[(1, 21318663), (3, 7106221), (17, 1254039), (51, 418013), (67, 318189), (201, 106063), (289, 73767), (367, 58089), (867, 24589), (1101, 19363), (1139, 18717), (3417, 6239)]