21113379

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1619}}^1$

素因数の和:1661

約数の個数: 40

約数和(自身を含む): 37635840

約数和(自身を除く): 16522461

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1619, 1863, 4347, 4857, 11333, 13041, 14571, 33999, 37237, 43713, 101997, 111711, 131139, 260659, 305991, 335133, 781977, 917973, 1005399, 2345931, 3016197, 7037793, 21113379]

約数ペア:

[(1, 21113379), (3, 7037793), (7, 3016197), (9, 2345931), (21, 1005399), (23, 917973), (27, 781977), (63, 335133), (69, 305991), (81, 260659), (161, 131139), (189, 111711), (207, 101997), (483, 43713), (567, 37237), (621, 33999), (1449, 14571), (1619, 13041), (1863, 11333), (4347, 4857)]