21166810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{10427}}^1$

素因数の和:10470

約数の個数: 32

約数和(自身を含む): 45048960

約数和(自身を除く): 23882150

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 10427, 20854, 52135, 72989, 104270, 145978, 302383, 364945, 604766, 729890, 1511915, 2116681, 3023830, 4233362, 10583405, 21166810]

約数ペア:

[(1, 21166810), (2, 10583405), (5, 4233362), (7, 3023830), (10, 2116681), (14, 1511915), (29, 729890), (35, 604766), (58, 364945), (70, 302383), (145, 145978), (203, 104270), (290, 72989), (406, 52135), (1015, 20854), (2030, 10427)]