20989656

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{7879}}^1$

素因数の和:7928

約数の個数: 48

約数和(自身を含む): 58390800

約数和(自身を除く): 37401144

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 111, 148, 222, 296, 333, 444, 666, 888, 1332, 2664, 7879, 15758, 23637, 31516, 47274, 63032, 70911, 94548, 141822, 189096, 283644, 291523, 567288, 583046, 874569, 1166092, 1749138, 2332184, 2623707, 3498276, 5247414, 6996552, 10494828, 20989656]

約数ペア:

[(1, 20989656), (2, 10494828), (3, 6996552), (4, 5247414), (6, 3498276), (8, 2623707), (9, 2332184), (12, 1749138), (18, 1166092), (24, 874569), (36, 583046), (37, 567288), (72, 291523), (74, 283644), (111, 189096), (148, 141822), (222, 94548), (296, 70911), (333, 63032), (444, 47274), (666, 31516), (888, 23637), (1332, 15758), (2664, 7879)]