21981675

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12743}}^1$

素因数の和:12779

約数の個数: 24

約数和(自身を含む): 37926144

約数和(自身を除く): 15944469

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12743, 38229, 63715, 191145, 293089, 318575, 879267, 955725, 1465445, 4396335, 7327225, 21981675]

約数ペア:

[(1, 21981675), (3, 7327225), (5, 4396335), (15, 1465445), (23, 955725), (25, 879267), (69, 318575), (75, 293089), (115, 191145), (345, 63715), (575, 38229), (1725, 12743)]