21000496993

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{167}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 25731256320

約数和(自身を除く): 4730759327

約数列:

[1, 7, 43, 59, 73, 97, 167, 301, 413, 511, 679, 1169, 2537, 3139, 4171, 4307, 5723, 7081, 7181, 9853, 12191, 16199, 17759, 21973, 29197, 30149, 40061, 49567, 50267, 68971, 85337, 113393, 185201, 246089, 304483, 417779, 423679, 524213, 696557, 719269, 955741, 1182527, 1296407, 1722623, 2131381, 2924453, 2965753, 3669491, 4875899, 5034883, 6690187, 8277689, 17964497, 30928567, 41096863, 50848661, 69769093, 125751479, 216499969, 287678041, 355940627, 488383651, 3000070999, 21000496993]

約数ペア:

[(1, 21000496993), (7, 3000070999), (43, 488383651), (59, 355940627), (73, 287678041), (97, 216499969), (167, 125751479), (301, 69769093), (413, 50848661), (511, 41096863), (679, 30928567), (1169, 17964497), (2537, 8277689), (3139, 6690187), (4171, 5034883), (4307, 4875899), (5723, 3669491), (7081, 2965753), (7181, 2924453), (9853, 2131381), (12191, 1722623), (16199, 1296407), (17759, 1182527), (21973, 955741), (29197, 719269), (30149, 696557), (40061, 524213), (49567, 423679), (50267, 417779), (68971, 304483), (85337, 246089), (113393, 185201)]