1290780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 4009824

約数和(自身を除く): 2719044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 101, 142, 180, 202, 213, 284, 303, 355, 404, 426, 505, 606, 639, 710, 852, 909, 1010, 1065, 1212, 1278, 1420, 1515, 1818, 2020, 2130, 2556, 3030, 3195, 3636, 4260, 4545, 6060, 6390, 7171, 9090, 12780, 14342, 18180, 21513, 28684, 35855, 43026, 64539, 71710, 86052, 107565, 129078, 143420, 215130, 258156, 322695, 430260, 645390, 1290780]

約数ペア:

[(1, 1290780), (2, 645390), (3, 430260), (4, 322695), (5, 258156), (6, 215130), (9, 143420), (10, 129078), (12, 107565), (15, 86052), (18, 71710), (20, 64539), (30, 43026), (36, 35855), (45, 28684), (60, 21513), (71, 18180), (90, 14342), (101, 12780), (142, 9090), (180, 7171), (202, 6390), (213, 6060), (284, 4545), (303, 4260), (355, 3636), (404, 3195), (426, 3030), (505, 2556), (606, 2130), (639, 2020), (710, 1818), (852, 1515), (909, 1420), (1010, 1278), (1065, 1212)]