19400615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 8178265

約数列:

[1, 5, 13, 19, 23, 65, 95, 115, 247, 299, 437, 683, 1235, 1495, 2185, 3415, 5681, 8879, 12977, 15709, 28405, 44395, 64885, 78545, 168701, 204217, 298471, 843505, 1021085, 1492355, 3880123, 19400615]

約数ペア:

[(1, 19400615), (5, 3880123), (13, 1492355), (19, 1021085), (23, 843505), (65, 298471), (95, 204217), (115, 168701), (247, 78545), (299, 64885), (437, 44395), (683, 28405), (1235, 15709), (1495, 12977), (2185, 8879), (3415, 5681)]