21447615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20356161

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 83, 105, 107, 115, 161, 249, 321, 345, 415, 483, 535, 581, 749, 805, 1245, 1605, 1743, 1909, 2247, 2415, 2461, 2905, 3745, 5727, 7383, 8715, 8881, 9545, 11235, 12305, 13363, 17227, 26643, 28635, 36915, 40089, 44405, 51681, 62167, 66815, 86135, 133215, 186501, 200445, 204263, 258405, 310835, 612789, 932505, 1021315, 1429841, 3063945, 4289523, 7149205, 21447615]

約数ペア:

[(1, 21447615), (3, 7149205), (5, 4289523), (7, 3063945), (15, 1429841), (21, 1021315), (23, 932505), (35, 612789), (69, 310835), (83, 258405), (105, 204263), (107, 200445), (115, 186501), (161, 133215), (249, 86135), (321, 66815), (345, 62167), (415, 51681), (483, 44405), (535, 40089), (581, 36915), (749, 28635), (805, 26643), (1245, 17227), (1605, 13363), (1743, 12305), (1909, 11235), (2247, 9545), (2415, 8881), (2461, 8715), (2905, 7383), (3745, 5727)]