251016870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643633}}^1$

素因数の和:643656

約数の個数: 32

約数和(自身を含む): 648783072

約数和(自身を除く): 397766202

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 643633, 1287266, 1930899, 3218165, 3861798, 6436330, 8367229, 9654495, 16734458, 19308990, 25101687, 41836145, 50203374, 83672290, 125508435, 251016870]

約数ペア:

[(1, 251016870), (2, 125508435), (3, 83672290), (5, 50203374), (6, 41836145), (10, 25101687), (13, 19308990), (15, 16734458), (26, 9654495), (30, 8367229), (39, 6436330), (65, 3861798), (78, 3218165), (130, 1930899), (195, 1287266), (390, 643633)]