18947515

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:199

約数の個数: 32

約数和(自身を含む): 25105536

約数和(自身を除く): 6158021

約数列:

[1, 5, 23, 37, 61, 73, 115, 185, 305, 365, 851, 1403, 1679, 2257, 2701, 4255, 4453, 7015, 8395, 11285, 13505, 22265, 51911, 62123, 102419, 164761, 259555, 310615, 512095, 823805, 3789503, 18947515]

約数ペア:

[(1, 18947515), (5, 3789503), (23, 823805), (37, 512095), (61, 310615), (73, 259555), (115, 164761), (185, 102419), (305, 62123), (365, 51911), (851, 22265), (1403, 13505), (1679, 11285), (2257, 8395), (2701, 7015), (4255, 4453)]