31005520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4259}}^1$

素因数の和:4292

約数の個数: 80

約数和(自身を含む): 88744320

約数和(自身を除く): 57738800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 4259, 7280, 8518, 17036, 21295, 29813, 34072, 42590, 55367, 59626, 68144, 85180, 110734, 119252, 149065, 170360, 221468, 238504, 276835, 298130, 340720, 387569, 442936, 477008, 553670, 596260, 775138, 885872, 1107340, 1192520, 1550276, 1937845, 2214680, 2385040, 3100552, 3875690, 4429360, 6201104, 7751380, 15502760, 31005520]

約数ペア:

[(1, 31005520), (2, 15502760), (4, 7751380), (5, 6201104), (7, 4429360), (8, 3875690), (10, 3100552), (13, 2385040), (14, 2214680), (16, 1937845), (20, 1550276), (26, 1192520), (28, 1107340), (35, 885872), (40, 775138), (52, 596260), (56, 553670), (65, 477008), (70, 442936), (80, 387569), (91, 340720), (104, 298130), (112, 276835), (130, 238504), (140, 221468), (182, 170360), (208, 149065), (260, 119252), (280, 110734), (364, 85180), (455, 68144), (520, 59626), (560, 55367), (728, 42590), (910, 34072), (1040, 29813), (1456, 21295), (1820, 17036), (3640, 8518), (4259, 7280)]