865430020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{475511}}^1$

素因数の和:475540

約数の個数: 48

約数和(自身を含む): 2236808448

約数和(自身を除く): 1371378428

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 475511, 951022, 1902044, 2377555, 3328577, 4755110, 6181643, 6657154, 9510220, 12363286, 13314308, 16642885, 24726572, 30908215, 33285770, 43271501, 61816430, 66571540, 86543002, 123632860, 173086004, 216357505, 432715010, 865430020]

約数ペア:

[(1, 865430020), (2, 432715010), (4, 216357505), (5, 173086004), (7, 123632860), (10, 86543002), (13, 66571540), (14, 61816430), (20, 43271501), (26, 33285770), (28, 30908215), (35, 24726572), (52, 16642885), (65, 13314308), (70, 12363286), (91, 9510220), (130, 6657154), (140, 6181643), (182, 4755110), (260, 3328577), (364, 2377555), (455, 1902044), (910, 951022), (1820, 475511)]