20563515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{673}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 41216448

約数和(自身を除く): 20652933

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 97, 105, 291, 315, 485, 673, 679, 873, 1455, 2019, 2037, 3365, 3395, 4365, 4711, 6057, 6111, 10095, 10185, 14133, 23555, 30285, 30555, 42399, 65281, 70665, 195843, 211995, 326405, 456967, 587529, 979215, 1370901, 2284835, 2937645, 4112703, 6854505, 20563515]

約数ペア:

[(1, 20563515), (3, 6854505), (5, 4112703), (7, 2937645), (9, 2284835), (15, 1370901), (21, 979215), (35, 587529), (45, 456967), (63, 326405), (97, 211995), (105, 195843), (291, 70665), (315, 65281), (485, 42399), (673, 30555), (679, 30285), (873, 23555), (1455, 14133), (2019, 10185), (2037, 10095), (3365, 6111), (3395, 6057), (4365, 4711)]