28403613

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 50294400

約数和(自身を除く): 21890787

約数列:

[1, 3, 7, 9, 19, 21, 57, 61, 63, 133, 171, 183, 389, 399, 427, 549, 1159, 1167, 1197, 1281, 2723, 3477, 3501, 3843, 7391, 8113, 8169, 10431, 22173, 23729, 24339, 24507, 51737, 66519, 71187, 73017, 155211, 166103, 213561, 450851, 465633, 498309, 1352553, 1494927, 3155957, 4057659, 9467871, 28403613]

約数ペア:

[(1, 28403613), (3, 9467871), (7, 4057659), (9, 3155957), (19, 1494927), (21, 1352553), (57, 498309), (61, 465633), (63, 450851), (133, 213561), (171, 166103), (183, 155211), (389, 73017), (399, 71187), (427, 66519), (549, 51737), (1159, 24507), (1167, 24339), (1197, 23729), (1281, 22173), (2723, 10431), (3477, 8169), (3501, 8113), (3843, 7391)]