19847997

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 32859008

約数和(自身を除く): 13011011

約数列:

[1, 3, 9, 13, 27, 39, 61, 81, 103, 117, 183, 243, 309, 351, 549, 793, 927, 1053, 1339, 1647, 2379, 2781, 3159, 4017, 4941, 6283, 7137, 8343, 12051, 14823, 18849, 21411, 25029, 36153, 56547, 64233, 81679, 108459, 169641, 192699, 245037, 325377, 508923, 735111, 1526769, 2205333, 6615999, 19847997]

約数ペア:

[(1, 19847997), (3, 6615999), (9, 2205333), (13, 1526769), (27, 735111), (39, 508923), (61, 325377), (81, 245037), (103, 192699), (117, 169641), (183, 108459), (243, 81679), (309, 64233), (351, 56547), (549, 36153), (793, 25029), (927, 21411), (1053, 18849), (1339, 14823), (1647, 12051), (2379, 8343), (2781, 7137), (3159, 6283), (4017, 4941)]