21963711

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 40317696

約数和(自身を除く): 18353985

約数列:

[1, 3, 7, 11, 17, 21, 33, 47, 49, 51, 77, 119, 141, 147, 187, 231, 289, 329, 357, 517, 539, 561, 799, 833, 867, 987, 1309, 1551, 1617, 2023, 2303, 2397, 2499, 3179, 3619, 3927, 5593, 6069, 6909, 8789, 9163, 9537, 10857, 13583, 14161, 16779, 22253, 25333, 26367, 27489, 39151, 40749, 42483, 61523, 66759, 75999, 95081, 117453, 149413, 155771, 184569, 285243, 430661, 448239, 467313, 665567, 1045891, 1291983, 1996701, 3137673, 7321237, 21963711]

約数ペア:

[(1, 21963711), (3, 7321237), (7, 3137673), (11, 1996701), (17, 1291983), (21, 1045891), (33, 665567), (47, 467313), (49, 448239), (51, 430661), (77, 285243), (119, 184569), (141, 155771), (147, 149413), (187, 117453), (231, 95081), (289, 75999), (329, 66759), (357, 61523), (517, 42483), (539, 40749), (561, 39151), (799, 27489), (833, 26367), (867, 25333), (987, 22253), (1309, 16779), (1551, 14161), (1617, 13583), (2023, 10857), (2303, 9537), (2397, 9163), (2499, 8789), (3179, 6909), (3619, 6069), (3927, 5593)]