258991720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{498061}}^1$

素因数の和:498085

約数の個数: 32

約数和(自身を含む): 627558120

約数和(自身を除く): 368566400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 498061, 996122, 1992244, 2490305, 3984488, 4980610, 6474793, 9961220, 12949586, 19922440, 25899172, 32373965, 51798344, 64747930, 129495860, 258991720]

約数ペア:

[(1, 258991720), (2, 129495860), (4, 64747930), (5, 51798344), (8, 32373965), (10, 25899172), (13, 19922440), (20, 12949586), (26, 9961220), (40, 6474793), (52, 4980610), (65, 3984488), (104, 2490305), (130, 1992244), (260, 996122), (520, 498061)]