19897878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3313}}^1$

素因数の和:3349

約数の個数: 64

約数和(自身を含む): 53448192

約数和(自身を除く): 33550314

約数列:

[1, 2, 3, 6, 7, 11, 13, 14, 21, 22, 26, 33, 39, 42, 66, 77, 78, 91, 143, 154, 182, 231, 273, 286, 429, 462, 546, 858, 1001, 2002, 3003, 3313, 6006, 6626, 9939, 19878, 23191, 36443, 43069, 46382, 69573, 72886, 86138, 109329, 129207, 139146, 218658, 255101, 258414, 301483, 473759, 510202, 602966, 765303, 904449, 947518, 1421277, 1530606, 1808898, 2842554, 3316313, 6632626, 9948939, 19897878]

約数ペア:

[(1, 19897878), (2, 9948939), (3, 6632626), (6, 3316313), (7, 2842554), (11, 1808898), (13, 1530606), (14, 1421277), (21, 947518), (22, 904449), (26, 765303), (33, 602966), (39, 510202), (42, 473759), (66, 301483), (77, 258414), (78, 255101), (91, 218658), (143, 139146), (154, 129207), (182, 109329), (231, 86138), (273, 72886), (286, 69573), (429, 46382), (462, 43069), (546, 36443), (858, 23191), (1001, 19878), (2002, 9939), (3003, 6626), (3313, 6006)]