21877443

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 37679616

約数和(自身を除く): 15802173

約数列:

[1, 3, 7, 9, 21, 63, 67, 71, 73, 201, 213, 219, 469, 497, 511, 603, 639, 657, 1407, 1491, 1533, 4221, 4473, 4599, 4757, 4891, 5183, 14271, 14673, 15549, 33299, 34237, 36281, 42813, 44019, 46647, 99897, 102711, 108843, 299691, 308133, 326529, 347261, 1041783, 2430827, 3125349, 7292481, 21877443]

約数ペア:

[(1, 21877443), (3, 7292481), (7, 3125349), (9, 2430827), (21, 1041783), (63, 347261), (67, 326529), (71, 308133), (73, 299691), (201, 108843), (213, 102711), (219, 99897), (469, 46647), (497, 44019), (511, 42813), (603, 36281), (639, 34237), (657, 33299), (1407, 15549), (1491, 14673), (1533, 14271), (4221, 5183), (4473, 4891), (4599, 4757)]