202420040

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{13009}}^1$

素因数の和:13409

約数の個数: 32

約数和(自身を含む): 456651000

約数和(自身を除く): 254230960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 13009, 15560, 26018, 52036, 65045, 104072, 130090, 260180, 520360, 5060501, 10121002, 20242004, 25302505, 40484008, 50605010, 101210020, 202420040]

約数ペア:

[(1, 202420040), (2, 101210020), (4, 50605010), (5, 40484008), (8, 25302505), (10, 20242004), (20, 10121002), (40, 5060501), (389, 520360), (778, 260180), (1556, 130090), (1945, 104072), (3112, 65045), (3890, 52036), (7780, 26018), (13009, 15560)]