19451380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{947}}^1$

素因数の和:1048

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 25142540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 947, 1027, 1580, 1894, 2054, 3788, 4108, 4735, 5135, 9470, 10270, 12311, 18940, 20540, 24622, 49244, 61555, 74813, 123110, 149626, 246220, 299252, 374065, 748130, 972569, 1496260, 1945138, 3890276, 4862845, 9725690, 19451380]

約数ペア:

[(1, 19451380), (2, 9725690), (4, 4862845), (5, 3890276), (10, 1945138), (13, 1496260), (20, 972569), (26, 748130), (52, 374065), (65, 299252), (79, 246220), (130, 149626), (158, 123110), (260, 74813), (316, 61555), (395, 49244), (790, 24622), (947, 20540), (1027, 18940), (1580, 12311), (1894, 10270), (2054, 9470), (3788, 5135), (4108, 4735)]