18691803

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 30963296

約数和(自身を除く): 12271493

約数列:

[1, 3, 9, 13, 27, 39, 61, 81, 97, 117, 183, 243, 291, 351, 549, 793, 873, 1053, 1261, 1647, 2379, 2619, 3159, 3783, 4941, 5917, 7137, 7857, 11349, 14823, 17751, 21411, 23571, 34047, 53253, 64233, 76921, 102141, 159759, 192699, 230763, 306423, 479277, 692289, 1437831, 2076867, 6230601, 18691803]

約数ペア:

[(1, 18691803), (3, 6230601), (9, 2076867), (13, 1437831), (27, 692289), (39, 479277), (61, 306423), (81, 230763), (97, 192699), (117, 159759), (183, 102141), (243, 76921), (291, 64233), (351, 53253), (549, 34047), (793, 23571), (873, 21411), (1053, 17751), (1261, 14823), (1647, 11349), (2379, 7857), (2619, 7137), (3159, 5917), (3783, 4941)]