21111384

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2371}}^1$

素因数の和:2440

約数の個数: 64

約数和(自身を含む): 61482240

約数和(自身を除く): 40370856

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 53, 56, 84, 106, 159, 168, 212, 318, 371, 424, 636, 742, 1113, 1272, 1484, 2226, 2371, 2968, 4452, 4742, 7113, 8904, 9484, 14226, 16597, 18968, 28452, 33194, 49791, 56904, 66388, 99582, 125663, 132776, 199164, 251326, 376989, 398328, 502652, 753978, 879641, 1005304, 1507956, 1759282, 2638923, 3015912, 3518564, 5277846, 7037128, 10555692, 21111384]

約数ペア:

[(1, 21111384), (2, 10555692), (3, 7037128), (4, 5277846), (6, 3518564), (7, 3015912), (8, 2638923), (12, 1759282), (14, 1507956), (21, 1005304), (24, 879641), (28, 753978), (42, 502652), (53, 398328), (56, 376989), (84, 251326), (106, 199164), (159, 132776), (168, 125663), (212, 99582), (318, 66388), (371, 56904), (424, 49791), (636, 33194), (742, 28452), (1113, 18968), (1272, 16597), (1484, 14226), (2226, 9484), (2371, 8904), (2968, 7113), (4452, 4742)]