213771350

素因数分解:

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

素因数の和:262

約数の個数: 72

約数和(自身を含む): 446346432

約数和(自身を除く): 232575082

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 103, 130, 155, 206, 310, 325, 403, 515, 650, 775, 806, 1030, 1339, 1550, 2015, 2575, 2678, 3193, 4030, 5150, 6386, 6695, 10075, 10609, 13390, 15965, 20150, 21218, 31930, 33475, 41509, 53045, 66950, 79825, 83018, 106090, 137917, 159650, 207545, 265225, 275834, 328879, 415090, 530450, 657758, 689585, 1037725, 1379170, 1644395, 2075450, 3288790, 3447925, 4275427, 6895850, 8221975, 8550854, 16443950, 21377135, 42754270, 106885675, 213771350]

約数ペア:

[(1, 213771350), (2, 106885675), (5, 42754270), (10, 21377135), (13, 16443950), (25, 8550854), (26, 8221975), (31, 6895850), (50, 4275427), (62, 3447925), (65, 3288790), (103, 2075450), (130, 1644395), (155, 1379170), (206, 1037725), (310, 689585), (325, 657758), (403, 530450), (515, 415090), (650, 328879), (775, 275834), (806, 265225), (1030, 207545), (1339, 159650), (1550, 137917), (2015, 106090), (2575, 83018), (2678, 79825), (3193, 66950), (4030, 53045), (5150, 41509), (6386, 33475), (6695, 31930), (10075, 21218), (10609, 20150), (13390, 15965)]