21258622

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 42283008

約数和(自身を除く): 21024386

約数列:

[1, 2, 7, 11, 14, 22, 31, 61, 62, 73, 77, 122, 146, 154, 217, 341, 427, 434, 511, 671, 682, 803, 854, 1022, 1342, 1606, 1891, 2263, 2387, 3782, 4453, 4526, 4697, 4774, 5621, 8906, 9394, 11242, 13237, 15841, 20801, 24893, 26474, 31171, 31682, 41602, 48983, 49786, 62342, 97966, 138043, 145607, 174251, 276086, 291214, 342881, 348502, 685762, 966301, 1518473, 1932602, 3036946, 10629311, 21258622]

約数ペア:

[(1, 21258622), (2, 10629311), (7, 3036946), (11, 1932602), (14, 1518473), (22, 966301), (31, 685762), (61, 348502), (62, 342881), (73, 291214), (77, 276086), (122, 174251), (146, 145607), (154, 138043), (217, 97966), (341, 62342), (427, 49786), (434, 48983), (511, 41602), (671, 31682), (682, 31171), (803, 26474), (854, 24893), (1022, 20801), (1342, 15841), (1606, 13237), (1891, 11242), (2263, 9394), (2387, 8906), (3782, 5621), (4453, 4774), (4526, 4697)]