645390

素因数分解:

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

素因数の和:185

約数の個数: 48

約数和(自身を含む): 1718496

約数和(自身を除く): 1073106

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 101, 142, 202, 213, 303, 355, 426, 505, 606, 639, 710, 909, 1010, 1065, 1278, 1515, 1818, 2130, 3030, 3195, 4545, 6390, 7171, 9090, 14342, 21513, 35855, 43026, 64539, 71710, 107565, 129078, 215130, 322695, 645390]

約数ペア:

[(1, 645390), (2, 322695), (3, 215130), (5, 129078), (6, 107565), (9, 71710), (10, 64539), (15, 43026), (18, 35855), (30, 21513), (45, 14342), (71, 9090), (90, 7171), (101, 6390), (142, 4545), (202, 3195), (213, 3030), (303, 2130), (355, 1818), (426, 1515), (505, 1278), (606, 1065), (639, 1010), (710, 909)]