212819985

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{96517}}^1$

素因数の和:96542

約数の個数: 36

約数和(自身を含む): 429119028

約数和(自身を除く): 216299043

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 96517, 289551, 482585, 675619, 868653, 1447755, 2026857, 3378095, 4343265, 4729333, 6080571, 10134285, 14187999, 23646665, 30402855, 42563997, 70939995, 212819985]

約数ペア:

[(1, 212819985), (3, 70939995), (5, 42563997), (7, 30402855), (9, 23646665), (15, 14187999), (21, 10134285), (35, 6080571), (45, 4729333), (49, 4343265), (63, 3378095), (105, 2026857), (147, 1447755), (245, 868653), (315, 675619), (441, 482585), (735, 289551), (2205, 96517)]