20990928

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{62473}}^1$

素因数の和:62491

約数の個数: 40

約数和(自身を含む): 61974208

約数和(自身を除く): 40983280

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 62473, 124946, 187419, 249892, 374838, 437311, 499784, 749676, 874622, 999568, 1311933, 1499352, 1749244, 2623866, 2998704, 3498488, 5247732, 6996976, 10495464, 20990928]

約数ペア:

[(1, 20990928), (2, 10495464), (3, 6996976), (4, 5247732), (6, 3498488), (7, 2998704), (8, 2623866), (12, 1749244), (14, 1499352), (16, 1311933), (21, 999568), (24, 874622), (28, 749676), (42, 499784), (48, 437311), (56, 374838), (84, 249892), (112, 187419), (168, 124946), (336, 62473)]