18754775

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{193}}^1$

素因数の和:252

約数の個数: 36

約数和(自身を含む): 26413488

約数和(自身を除く): 7658713

約数列:

[1, 5, 13, 23, 25, 65, 115, 169, 193, 299, 325, 575, 845, 965, 1495, 2509, 3887, 4225, 4439, 4825, 7475, 12545, 19435, 22195, 32617, 57707, 62725, 97175, 110975, 163085, 288535, 750191, 815425, 1442675, 3750955, 18754775]

約数ペア:

[(1, 18754775), (5, 3750955), (13, 1442675), (23, 815425), (25, 750191), (65, 288535), (115, 163085), (169, 110975), (193, 97175), (299, 62725), (325, 57707), (575, 32617), (845, 22195), (965, 19435), (1495, 12545), (2509, 7475), (3887, 4825), (4225, 4439)]