21135390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{30631}}^1$

素因数の和:30664

約数の個数: 32

約数和(自身を含む): 52932096

約数和(自身を除く): 31796706

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 30631, 61262, 91893, 153155, 183786, 306310, 459465, 704513, 918930, 1409026, 2113539, 3522565, 4227078, 7045130, 10567695, 21135390]

約数ペア:

[(1, 21135390), (2, 10567695), (3, 7045130), (5, 4227078), (6, 3522565), (10, 2113539), (15, 1409026), (23, 918930), (30, 704513), (46, 459465), (69, 306310), (115, 183786), (138, 153155), (230, 91893), (345, 61262), (690, 30631)]