21405916

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{773}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 45771264

約数和(自身を除く): 24365348

約数列:

[1, 2, 4, 7, 14, 23, 28, 43, 46, 86, 92, 161, 172, 301, 322, 602, 644, 773, 989, 1204, 1546, 1978, 3092, 3956, 5411, 6923, 10822, 13846, 17779, 21644, 27692, 33239, 35558, 66478, 71116, 124453, 132956, 232673, 248906, 465346, 497812, 764497, 930692, 1528994, 3057988, 5351479, 10702958, 21405916]

約数ペア:

[(1, 21405916), (2, 10702958), (4, 5351479), (7, 3057988), (14, 1528994), (23, 930692), (28, 764497), (43, 497812), (46, 465346), (86, 248906), (92, 232673), (161, 132956), (172, 124453), (301, 71116), (322, 66478), (602, 35558), (644, 33239), (773, 27692), (989, 21644), (1204, 17779), (1546, 13846), (1978, 10822), (3092, 6923), (3956, 5411)]