21551149025

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2018843}}^1$

素因数の和:2018921

約数の個数: 24

約数和(自身を含む): 31041745344

約数和(自身を除く): 9490596319

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1525, 2135, 10675, 2018843, 10094215, 14131901, 50471075, 70659505, 123149423, 353297525, 615747115, 862045961, 3078735575, 4310229805, 21551149025]

約数ペア:

[(1, 21551149025), (5, 4310229805), (7, 3078735575), (25, 862045961), (35, 615747115), (61, 353297525), (175, 123149423), (305, 70659505), (427, 50471075), (1525, 14131901), (2135, 10094215), (10675, 2018843)]