21697395

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 36854784

約数和(自身を除く): 15157389

約数列:

[1, 3, 5, 15, 23, 61, 69, 115, 183, 305, 345, 915, 1031, 1403, 3093, 4209, 5155, 7015, 15465, 21045, 23713, 62891, 71139, 118565, 188673, 314455, 355695, 943365, 1446493, 4339479, 7232465, 21697395]

約数ペア:

[(1, 21697395), (3, 7232465), (5, 4339479), (15, 1446493), (23, 943365), (61, 355695), (69, 314455), (115, 188673), (183, 118565), (305, 71139), (345, 62891), (915, 23713), (1031, 21045), (1403, 15465), (3093, 7015), (4209, 5155)]