21187029279

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{83}}^1\times {\mathrm{2963}}^1$

素因数の和:3156

約数の個数: 48

約数和(自身を含む): 31468574592

約数和(自身を除く): 10281545313

約数列:

[1, 3, 13, 39, 47, 83, 141, 249, 611, 1079, 1833, 2209, 2963, 3237, 3901, 6627, 8889, 11703, 28717, 38519, 50713, 86151, 115557, 139261, 152139, 183347, 245929, 417783, 550041, 737787, 1810393, 2383511, 3197077, 5431179, 6545267, 7150533, 9591231, 11558663, 19635801, 34675989, 85088471, 150262619, 255265413, 450787857, 543257161, 1629771483, 7062343093, 21187029279]

約数ペア:

[(1, 21187029279), (3, 7062343093), (13, 1629771483), (39, 543257161), (47, 450787857), (83, 255265413), (141, 150262619), (249, 85088471), (611, 34675989), (1079, 19635801), (1833, 11558663), (2209, 9591231), (2963, 7150533), (3237, 6545267), (3901, 5431179), (6627, 3197077), (8889, 2383511), (11703, 1810393), (28717, 737787), (38519, 550041), (50713, 417783), (86151, 245929), (115557, 183347), (139261, 152139)]