18887778

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{887}}^1$

素因数の和:928

約数の個数: 72

約数和(自身を含む): 50701248

約数和(自身を除く): 31813470

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 169, 182, 234, 273, 338, 507, 546, 819, 887, 1014, 1183, 1521, 1638, 1774, 2366, 2661, 3042, 3549, 5322, 6209, 7098, 7983, 10647, 11531, 12418, 15966, 18627, 21294, 23062, 34593, 37254, 55881, 69186, 80717, 103779, 111762, 149903, 161434, 207558, 242151, 299806, 449709, 484302, 726453, 899418, 1049321, 1349127, 1452906, 2098642, 2698254, 3147963, 6295926, 9443889, 18887778]

約数ペア:

[(1, 18887778), (2, 9443889), (3, 6295926), (6, 3147963), (7, 2698254), (9, 2098642), (13, 1452906), (14, 1349127), (18, 1049321), (21, 899418), (26, 726453), (39, 484302), (42, 449709), (63, 299806), (78, 242151), (91, 207558), (117, 161434), (126, 149903), (169, 111762), (182, 103779), (234, 80717), (273, 69186), (338, 55881), (507, 37254), (546, 34593), (819, 23062), (887, 21294), (1014, 18627), (1183, 15966), (1521, 12418), (1638, 11531), (1774, 10647), (2366, 7983), (2661, 7098), (3042, 6209), (3549, 5322)]