31981040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:247

約数の個数: 160

約数和(自身を含む): 95993856

約数和(自身を除く): 64012816

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 80, 91, 92, 104, 112, 115, 130, 140, 161, 182, 184, 191, 208, 230, 260, 280, 299, 322, 364, 368, 382, 455, 460, 520, 560, 598, 644, 728, 764, 805, 910, 920, 955, 1040, 1196, 1288, 1337, 1456, 1495, 1528, 1610, 1820, 1840, 1910, 2093, 2392, 2483, 2576, 2674, 2990, 3056, 3220, 3640, 3820, 4186, 4393, 4784, 4966, 5348, 5980, 6440, 6685, 7280, 7640, 8372, 8786, 9932, 10465, 10696, 11960, 12415, 12880, 13370, 15280, 16744, 17381, 17572, 19864, 20930, 21392, 21965, 23920, 24830, 26740, 30751, 33488, 34762, 35144, 39728, 41860, 43930, 49660, 53480, 57109, 61502, 69524, 70288, 83720, 86905, 87860, 99320, 106960, 114218, 123004, 139048, 153755, 167440, 173810, 175720, 198640, 228436, 246008, 278096, 285545, 307510, 347620, 351440, 399763, 456872, 492016, 571090, 615020, 695240, 799526, 913744, 1142180, 1230040, 1390480, 1599052, 1998815, 2284360, 2460080, 3198104, 3997630, 4568720, 6396208, 7995260, 15990520, 31981040]

約数ペア:

[(1, 31981040), (2, 15990520), (4, 7995260), (5, 6396208), (7, 4568720), (8, 3997630), (10, 3198104), (13, 2460080), (14, 2284360), (16, 1998815), (20, 1599052), (23, 1390480), (26, 1230040), (28, 1142180), (35, 913744), (40, 799526), (46, 695240), (52, 615020), (56, 571090), (65, 492016), (70, 456872), (80, 399763), (91, 351440), (92, 347620), (104, 307510), (112, 285545), (115, 278096), (130, 246008), (140, 228436), (161, 198640), (182, 175720), (184, 173810), (191, 167440), (208, 153755), (230, 139048), (260, 123004), (280, 114218), (299, 106960), (322, 99320), (364, 87860), (368, 86905), (382, 83720), (455, 70288), (460, 69524), (520, 61502), (560, 57109), (598, 53480), (644, 49660), (728, 43930), (764, 41860), (805, 39728), (910, 35144), (920, 34762), (955, 33488), (1040, 30751), (1196, 26740), (1288, 24830), (1337, 23920), (1456, 21965), (1495, 21392), (1528, 20930), (1610, 19864), (1820, 17572), (1840, 17381), (1910, 16744), (2093, 15280), (2392, 13370), (2483, 12880), (2576, 12415), (2674, 11960), (2990, 10696), (3056, 10465), (3220, 9932), (3640, 8786), (3820, 8372), (4186, 7640), (4393, 7280), (4784, 6685), (4966, 6440), (5348, 5980)]