21158466

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 50239488

約数和(自身を除く): 29081022

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 67, 73, 103, 134, 146, 201, 206, 219, 309, 402, 438, 469, 511, 618, 721, 938, 1022, 1407, 1442, 1533, 2163, 2814, 3066, 4326, 4891, 6901, 7519, 9782, 13802, 14673, 15038, 20703, 22557, 29346, 34237, 41406, 45114, 48307, 52633, 68474, 96614, 102711, 105266, 144921, 157899, 205422, 289842, 315798, 503773, 1007546, 1511319, 3022638, 3526411, 7052822, 10579233, 21158466]

約数ペア:

[(1, 21158466), (2, 10579233), (3, 7052822), (6, 3526411), (7, 3022638), (14, 1511319), (21, 1007546), (42, 503773), (67, 315798), (73, 289842), (103, 205422), (134, 157899), (146, 144921), (201, 105266), (206, 102711), (219, 96614), (309, 68474), (402, 52633), (438, 48307), (469, 45114), (511, 41406), (618, 34237), (721, 29346), (938, 22557), (1022, 20703), (1407, 15038), (1442, 14673), (1533, 13802), (2163, 9782), (2814, 7519), (3066, 6901), (4326, 4891)]