257355800

素因数分解:

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

素因数の和:194

約数の個数: 144

約数和(自身を含む): 672300720

約数和(自身を除く): 414944920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 103, 104, 124, 130, 155, 200, 206, 248, 260, 310, 325, 403, 412, 515, 520, 620, 650, 775, 806, 824, 961, 1030, 1240, 1300, 1339, 1550, 1612, 1922, 2015, 2060, 2575, 2600, 2678, 3100, 3193, 3224, 3844, 4030, 4120, 4805, 5150, 5356, 6200, 6386, 6695, 7688, 8060, 9610, 10075, 10300, 10712, 12493, 12772, 13390, 15965, 16120, 19220, 20150, 20600, 24025, 24986, 25544, 26780, 31930, 33475, 38440, 40300, 41509, 48050, 49972, 53560, 62465, 63860, 66950, 79825, 80600, 83018, 96100, 98983, 99944, 124930, 127720, 133900, 159650, 166036, 192200, 197966, 207545, 249860, 267800, 312325, 319300, 332072, 395932, 415090, 494915, 499720, 624650, 638600, 791864, 830180, 989830, 1037725, 1249300, 1286779, 1660360, 1979660, 2075450, 2474575, 2498600, 2573558, 3959320, 4150900, 4949150, 5147116, 6433895, 8301800, 9898300, 10294232, 12867790, 19796600, 25735580, 32169475, 51471160, 64338950, 128677900, 257355800]

約数ペア:

[(1, 257355800), (2, 128677900), (4, 64338950), (5, 51471160), (8, 32169475), (10, 25735580), (13, 19796600), (20, 12867790), (25, 10294232), (26, 9898300), (31, 8301800), (40, 6433895), (50, 5147116), (52, 4949150), (62, 4150900), (65, 3959320), (100, 2573558), (103, 2498600), (104, 2474575), (124, 2075450), (130, 1979660), (155, 1660360), (200, 1286779), (206, 1249300), (248, 1037725), (260, 989830), (310, 830180), (325, 791864), (403, 638600), (412, 624650), (515, 499720), (520, 494915), (620, 415090), (650, 395932), (775, 332072), (806, 319300), (824, 312325), (961, 267800), (1030, 249860), (1240, 207545), (1300, 197966), (1339, 192200), (1550, 166036), (1612, 159650), (1922, 133900), (2015, 127720), (2060, 124930), (2575, 99944), (2600, 98983), (2678, 96100), (3100, 83018), (3193, 80600), (3224, 79825), (3844, 66950), (4030, 63860), (4120, 62465), (4805, 53560), (5150, 49972), (5356, 48050), (6200, 41509), (6386, 40300), (6695, 38440), (7688, 33475), (8060, 31930), (9610, 26780), (10075, 25544), (10300, 24986), (10712, 24025), (12493, 20600), (12772, 20150), (13390, 19220), (15965, 16120)]