21309876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{821}}^1$

素因数の和:941

約数の個数: 72

約数和(自身を含む): 62235264

約数和(自身を除く): 40925388

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 103, 126, 206, 252, 309, 412, 618, 721, 821, 927, 1236, 1442, 1642, 1854, 2163, 2463, 2884, 3284, 3708, 4326, 4926, 5747, 6489, 7389, 8652, 9852, 11494, 12978, 14778, 17241, 22988, 25956, 29556, 34482, 51723, 68964, 84563, 103446, 169126, 206892, 253689, 338252, 507378, 591941, 761067, 1014756, 1183882, 1522134, 1775823, 2367764, 3044268, 3551646, 5327469, 7103292, 10654938, 21309876]

約数ペア:

[(1, 21309876), (2, 10654938), (3, 7103292), (4, 5327469), (6, 3551646), (7, 3044268), (9, 2367764), (12, 1775823), (14, 1522134), (18, 1183882), (21, 1014756), (28, 761067), (36, 591941), (42, 507378), (63, 338252), (84, 253689), (103, 206892), (126, 169126), (206, 103446), (252, 84563), (309, 68964), (412, 51723), (618, 34482), (721, 29556), (821, 25956), (927, 22988), (1236, 17241), (1442, 14778), (1642, 12978), (1854, 11494), (2163, 9852), (2463, 8652), (2884, 7389), (3284, 6489), (3708, 5747), (4326, 4926)]