31513040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:376

約数の個数: 80

約数和(自身を含む): 79817808

約数和(自身を除く): 48304768

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 157, 193, 208, 260, 314, 386, 520, 628, 772, 785, 965, 1040, 1256, 1544, 1570, 1930, 2041, 2509, 2512, 3088, 3140, 3860, 4082, 5018, 6280, 7720, 8164, 10036, 10205, 12545, 12560, 15440, 16328, 20072, 20410, 25090, 30301, 32656, 40144, 40820, 50180, 60602, 81640, 100360, 121204, 151505, 163280, 200720, 242408, 303010, 393913, 484816, 606020, 787826, 1212040, 1575652, 1969565, 2424080, 3151304, 3939130, 6302608, 7878260, 15756520, 31513040]

約数ペア:

[(1, 31513040), (2, 15756520), (4, 7878260), (5, 6302608), (8, 3939130), (10, 3151304), (13, 2424080), (16, 1969565), (20, 1575652), (26, 1212040), (40, 787826), (52, 606020), (65, 484816), (80, 393913), (104, 303010), (130, 242408), (157, 200720), (193, 163280), (208, 151505), (260, 121204), (314, 100360), (386, 81640), (520, 60602), (628, 50180), (772, 40820), (785, 40144), (965, 32656), (1040, 30301), (1256, 25090), (1544, 20410), (1570, 20072), (1930, 16328), (2041, 15440), (2509, 12560), (2512, 12545), (3088, 10205), (3140, 10036), (3860, 8164), (4082, 7720), (5018, 6280)]