19618515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1021}}^1$

素因数の和:1100

約数の個数: 48

約数和(自身を含む): 39539136

約数和(自身を除く): 19920621

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 1021, 1281, 2135, 2745, 3063, 3843, 5105, 6405, 7147, 9189, 15315, 19215, 21441, 35735, 45945, 62281, 64323, 107205, 186843, 311405, 321615, 435967, 560529, 934215, 1307901, 2179835, 2802645, 3923703, 6539505, 19618515]

約数ペア:

[(1, 19618515), (3, 6539505), (5, 3923703), (7, 2802645), (9, 2179835), (15, 1307901), (21, 934215), (35, 560529), (45, 435967), (61, 321615), (63, 311405), (105, 186843), (183, 107205), (305, 64323), (315, 62281), (427, 45945), (549, 35735), (915, 21441), (1021, 19215), (1281, 15315), (2135, 9189), (2745, 7147), (3063, 6405), (3843, 5105)]