256100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 601524

約数和(自身を除く): 345424

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 197, 260, 325, 394, 650, 788, 985, 1300, 1970, 2561, 3940, 4925, 5122, 9850, 10244, 12805, 19700, 25610, 51220, 64025, 128050, 256100]

約数ペア:

[(1, 256100), (2, 128050), (4, 64025), (5, 51220), (10, 25610), (13, 19700), (20, 12805), (25, 10244), (26, 9850), (50, 5122), (52, 4925), (65, 3940), (100, 2561), (130, 1970), (197, 1300), (260, 985), (325, 788), (394, 650)]