15756520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 38621520

約数和(自身を除く): 22865000

約数列:

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

約数ペア:

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