19125820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2039}}^1$

素因数の和:2122

約数の個数: 48

約数和(自身を含む): 46609920

約数和(自身を除く): 27484100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2039, 2345, 4078, 4690, 8156, 9380, 10195, 14273, 20390, 28546, 40780, 57092, 71365, 136613, 142730, 273226, 285460, 546452, 683065, 956291, 1366130, 1912582, 2732260, 3825164, 4781455, 9562910, 19125820]

約数ペア:

[(1, 19125820), (2, 9562910), (4, 4781455), (5, 3825164), (7, 2732260), (10, 1912582), (14, 1366130), (20, 956291), (28, 683065), (35, 546452), (67, 285460), (70, 273226), (134, 142730), (140, 136613), (268, 71365), (335, 57092), (469, 40780), (670, 28546), (938, 20390), (1340, 14273), (1876, 10195), (2039, 9380), (2345, 8156), (4078, 4690)]