68820920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{245789}}^1$

素因数の和:245807

約数の個数: 32

約数和(自身を含む): 176968800

約数和(自身を除く): 108147880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 245789, 491578, 983156, 1228945, 1720523, 1966312, 2457890, 3441046, 4915780, 6882092, 8602615, 9831560, 13764184, 17205230, 34410460, 68820920]

約数ペア:

[(1, 68820920), (2, 34410460), (4, 17205230), (5, 13764184), (7, 9831560), (8, 8602615), (10, 6882092), (14, 4915780), (20, 3441046), (28, 2457890), (35, 1966312), (40, 1720523), (56, 1228945), (70, 983156), (140, 491578), (280, 245789)]