18828316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 40325040

約数和(自身を除く): 21496724

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 59, 68, 76, 118, 221, 236, 247, 323, 361, 442, 494, 646, 722, 767, 884, 988, 1003, 1121, 1292, 1444, 1534, 2006, 2242, 3068, 4012, 4199, 4484, 4693, 6137, 8398, 9386, 12274, 13039, 14573, 16796, 18772, 19057, 21299, 24548, 26078, 29146, 38114, 42598, 52156, 58292, 76228, 79781, 85196, 159562, 247741, 276887, 319124, 362083, 495482, 553774, 724166, 990964, 1107548, 1448332, 4707079, 9414158, 18828316]

約数ペア:

[(1, 18828316), (2, 9414158), (4, 4707079), (13, 1448332), (17, 1107548), (19, 990964), (26, 724166), (34, 553774), (38, 495482), (52, 362083), (59, 319124), (68, 276887), (76, 247741), (118, 159562), (221, 85196), (236, 79781), (247, 76228), (323, 58292), (361, 52156), (442, 42598), (494, 38114), (646, 29146), (722, 26078), (767, 24548), (884, 21299), (988, 19057), (1003, 18772), (1121, 16796), (1292, 14573), (1444, 13039), (1534, 12274), (2006, 9386), (2242, 8398), (3068, 6137), (4012, 4693), (4199, 4484)]