20190440

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2011}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 45632160

約数和(自身を除く): 25441720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2011, 2510, 4022, 5020, 8044, 10040, 10055, 16088, 20110, 40220, 80440, 504761, 1009522, 2019044, 2523805, 4038088, 5047610, 10095220, 20190440]

約数ペア:

[(1, 20190440), (2, 10095220), (4, 5047610), (5, 4038088), (8, 2523805), (10, 2019044), (20, 1009522), (40, 504761), (251, 80440), (502, 40220), (1004, 20110), (1255, 16088), (2008, 10055), (2011, 10040), (2510, 8044), (4022, 5020)]