31186980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{829}}^1$

素因数の和:874

約数の個数: 144

約数和(自身を含む): 108763200

約数和(自身を除く): 77576220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 495, 570, 627, 660, 684, 829, 836, 855, 990, 1045, 1140, 1254, 1658, 1710, 1881, 1980, 2090, 2487, 2508, 3135, 3316, 3420, 3762, 4145, 4180, 4974, 6270, 7461, 7524, 8290, 9119, 9405, 9948, 12435, 12540, 14922, 15751, 16580, 18238, 18810, 24870, 27357, 29844, 31502, 36476, 37305, 37620, 45595, 47253, 49740, 54714, 63004, 74610, 78755, 82071, 91190, 94506, 109428, 136785, 141759, 149220, 157510, 164142, 173261, 182380, 189012, 236265, 273570, 283518, 315020, 328284, 346522, 410355, 472530, 519783, 547140, 567036, 693044, 708795, 820710, 866305, 945060, 1039566, 1417590, 1559349, 1641420, 1732610, 2079132, 2598915, 2835180, 3118698, 3465220, 5197830, 6237396, 7796745, 10395660, 15593490, 31186980]

約数ペア:

[(1, 31186980), (2, 15593490), (3, 10395660), (4, 7796745), (5, 6237396), (6, 5197830), (9, 3465220), (10, 3118698), (11, 2835180), (12, 2598915), (15, 2079132), (18, 1732610), (19, 1641420), (20, 1559349), (22, 1417590), (30, 1039566), (33, 945060), (36, 866305), (38, 820710), (44, 708795), (45, 693044), (55, 567036), (57, 547140), (60, 519783), (66, 472530), (76, 410355), (90, 346522), (95, 328284), (99, 315020), (110, 283518), (114, 273570), (132, 236265), (165, 189012), (171, 182380), (180, 173261), (190, 164142), (198, 157510), (209, 149220), (220, 141759), (228, 136785), (285, 109428), (330, 94506), (342, 91190), (380, 82071), (396, 78755), (418, 74610), (495, 63004), (570, 54714), (627, 49740), (660, 47253), (684, 45595), (829, 37620), (836, 37305), (855, 36476), (990, 31502), (1045, 29844), (1140, 27357), (1254, 24870), (1658, 18810), (1710, 18238), (1881, 16580), (1980, 15751), (2090, 14922), (2487, 12540), (2508, 12435), (3135, 9948), (3316, 9405), (3420, 9119), (3762, 8290), (4145, 7524), (4180, 7461), (4974, 6270)]