31181920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2531}}^1$

素因数の和:2564

約数の個数: 96

約数和(自身を含む): 91881216

約数和(自身を除く): 60699296

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 352, 385, 440, 560, 616, 770, 880, 1120, 1232, 1540, 1760, 2464, 2531, 3080, 5062, 6160, 10124, 12320, 12655, 17717, 20248, 25310, 27841, 35434, 40496, 50620, 55682, 70868, 80992, 88585, 101240, 111364, 139205, 141736, 177170, 194887, 202480, 222728, 278410, 283472, 354340, 389774, 404960, 445456, 556820, 566944, 708680, 779548, 890912, 974435, 1113640, 1417360, 1559096, 1948870, 2227280, 2834720, 3118192, 3897740, 4454560, 6236384, 7795480, 15590960, 31181920]

約数ペア:

[(1, 31181920), (2, 15590960), (4, 7795480), (5, 6236384), (7, 4454560), (8, 3897740), (10, 3118192), (11, 2834720), (14, 2227280), (16, 1948870), (20, 1559096), (22, 1417360), (28, 1113640), (32, 974435), (35, 890912), (40, 779548), (44, 708680), (55, 566944), (56, 556820), (70, 445456), (77, 404960), (80, 389774), (88, 354340), (110, 283472), (112, 278410), (140, 222728), (154, 202480), (160, 194887), (176, 177170), (220, 141736), (224, 139205), (280, 111364), (308, 101240), (352, 88585), (385, 80992), (440, 70868), (560, 55682), (616, 50620), (770, 40496), (880, 35434), (1120, 27841), (1232, 25310), (1540, 20248), (1760, 17717), (2464, 12655), (2531, 12320), (3080, 10124), (5062, 6160)]