21671020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8147}}^1$

素因数の和:8182

約数の個数: 48

約数和(自身を含む): 54754560

約数和(自身を除く): 33083540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8147, 16294, 32588, 40735, 57029, 81470, 114058, 154793, 162940, 228116, 285145, 309586, 570290, 619172, 773965, 1083551, 1140580, 1547930, 2167102, 3095860, 4334204, 5417755, 10835510, 21671020]

約数ペア:

[(1, 21671020), (2, 10835510), (4, 5417755), (5, 4334204), (7, 3095860), (10, 2167102), (14, 1547930), (19, 1140580), (20, 1083551), (28, 773965), (35, 619172), (38, 570290), (70, 309586), (76, 285145), (95, 228116), (133, 162940), (140, 154793), (190, 114058), (266, 81470), (380, 57029), (532, 40735), (665, 32588), (1330, 16294), (2660, 8147)]