21705516

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28711}}^1$

素因数の和:28731

約数の個数: 48

約数和(自身を含む): 64314880

約数和(自身を除く): 42609364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28711, 57422, 86133, 114844, 172266, 200977, 258399, 344532, 401954, 516798, 602931, 775197, 803908, 1033596, 1205862, 1550394, 1808793, 2411724, 3100788, 3617586, 5426379, 7235172, 10852758, 21705516]

約数ペア:

[(1, 21705516), (2, 10852758), (3, 7235172), (4, 5426379), (6, 3617586), (7, 3100788), (9, 2411724), (12, 1808793), (14, 1550394), (18, 1205862), (21, 1033596), (27, 803908), (28, 775197), (36, 602931), (42, 516798), (54, 401954), (63, 344532), (84, 258399), (108, 200977), (126, 172266), (189, 114844), (252, 86133), (378, 57422), (756, 28711)]