21551950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:601

約数の個数: 48

約数和(自身を含む): 46247040

約数和(自身を除く): 24695090

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 139, 175, 278, 350, 443, 695, 886, 973, 1390, 1946, 2215, 3101, 3475, 4430, 4865, 6202, 6950, 9730, 11075, 15505, 22150, 24325, 31010, 48650, 61577, 77525, 123154, 155050, 307885, 431039, 615770, 862078, 1539425, 2155195, 3078850, 4310390, 10775975, 21551950]

約数ペア:

[(1, 21551950), (2, 10775975), (5, 4310390), (7, 3078850), (10, 2155195), (14, 1539425), (25, 862078), (35, 615770), (50, 431039), (70, 307885), (139, 155050), (175, 123154), (278, 77525), (350, 61577), (443, 48650), (695, 31010), (886, 24325), (973, 22150), (1390, 15505), (1946, 11075), (2215, 9730), (3101, 6950), (3475, 6202), (4430, 4865)]