131168440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:237

約数の個数: 128

約数和(自身を含む): 335462400

約数和(自身を除く): 204293960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 79, 103, 104, 124, 130, 155, 158, 206, 248, 260, 310, 316, 395, 403, 412, 515, 520, 620, 632, 790, 806, 824, 1027, 1030, 1240, 1339, 1580, 1612, 2015, 2054, 2060, 2449, 2678, 3160, 3193, 3224, 4030, 4108, 4120, 4898, 5135, 5356, 6386, 6695, 8060, 8137, 8216, 9796, 10270, 10712, 12245, 12772, 13390, 15965, 16120, 16274, 19592, 20540, 24490, 25544, 26780, 31837, 31930, 32548, 40685, 41080, 41509, 48980, 53560, 63674, 63860, 65096, 81370, 83018, 97960, 105781, 127348, 127720, 159185, 162740, 166036, 207545, 211562, 252247, 254696, 318370, 325480, 332072, 415090, 423124, 504494, 528905, 636740, 830180, 846248, 1008988, 1057810, 1261235, 1273480, 1660360, 2017976, 2115620, 2522470, 3279211, 4231240, 5044940, 6558422, 10089880, 13116844, 16396055, 26233688, 32792110, 65584220, 131168440]

約数ペア:

[(1, 131168440), (2, 65584220), (4, 32792110), (5, 26233688), (8, 16396055), (10, 13116844), (13, 10089880), (20, 6558422), (26, 5044940), (31, 4231240), (40, 3279211), (52, 2522470), (62, 2115620), (65, 2017976), (79, 1660360), (103, 1273480), (104, 1261235), (124, 1057810), (130, 1008988), (155, 846248), (158, 830180), (206, 636740), (248, 528905), (260, 504494), (310, 423124), (316, 415090), (395, 332072), (403, 325480), (412, 318370), (515, 254696), (520, 252247), (620, 211562), (632, 207545), (790, 166036), (806, 162740), (824, 159185), (1027, 127720), (1030, 127348), (1240, 105781), (1339, 97960), (1580, 83018), (1612, 81370), (2015, 65096), (2054, 63860), (2060, 63674), (2449, 53560), (2678, 48980), (3160, 41509), (3193, 41080), (3224, 40685), (4030, 32548), (4108, 31930), (4120, 31837), (4898, 26780), (5135, 25544), (5356, 24490), (6386, 20540), (6695, 19592), (8060, 16274), (8137, 16120), (8216, 15965), (9796, 13390), (10270, 12772), (10712, 12245)]