255320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 619920

約数和(自身を除く): 364600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 491, 520, 982, 1964, 2455, 3928, 4910, 6383, 9820, 12766, 19640, 25532, 31915, 51064, 63830, 127660, 255320]

約数ペア:

[(1, 255320), (2, 127660), (4, 63830), (5, 51064), (8, 31915), (10, 25532), (13, 19640), (20, 12766), (26, 9820), (40, 6383), (52, 4910), (65, 3928), (104, 2455), (130, 1964), (260, 982), (491, 520)]