18420423

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^2\times {\mathrm{149}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 29788200

約数和(自身を除く): 11367777

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 149, 203, 447, 609, 841, 1043, 1421, 2523, 3129, 4263, 4321, 5887, 7301, 12963, 17661, 21903, 30247, 41209, 90741, 123627, 125309, 211729, 375927, 635187, 877163, 2631489, 6140141, 18420423]

約数ペア:

[(1, 18420423), (3, 6140141), (7, 2631489), (21, 877163), (29, 635187), (49, 375927), (87, 211729), (147, 125309), (149, 123627), (203, 90741), (447, 41209), (609, 30247), (841, 21903), (1043, 17661), (1421, 12963), (2523, 7301), (3129, 5887), (4263, 4321)]