19756863

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 34122816

約数和(自身を除く): 14365953

約数列:

[1, 3, 7, 9, 21, 53, 61, 63, 97, 159, 183, 291, 371, 427, 477, 549, 679, 873, 1113, 1281, 2037, 3233, 3339, 3843, 5141, 5917, 6111, 9699, 15423, 17751, 22631, 29097, 35987, 41419, 46269, 53253, 67893, 107961, 124257, 203679, 313601, 323883, 372771, 940803, 2195207, 2822409, 6585621, 19756863]

約数ペア:

[(1, 19756863), (3, 6585621), (7, 2822409), (9, 2195207), (21, 940803), (53, 372771), (61, 323883), (63, 313601), (97, 203679), (159, 124257), (183, 107961), (291, 67893), (371, 53253), (427, 46269), (477, 41419), (549, 35987), (679, 29097), (873, 22631), (1113, 17751), (1281, 15423), (2037, 9699), (3233, 6111), (3339, 5917), (3843, 5141)]