1281291284

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{20347}}^1$

素因数の和:20544

約数の個数: 48

約数和(自身を含む): 2775792768

約数和(自身を除く): 1494501484

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 173, 182, 346, 364, 692, 1211, 2249, 2422, 4498, 4844, 8996, 15743, 20347, 31486, 40694, 62972, 81388, 142429, 264511, 284858, 529022, 569716, 1058044, 1851577, 3520031, 3703154, 7040062, 7406308, 14080124, 24640217, 45760403, 49280434, 91520806, 98560868, 183041612, 320322821, 640645642, 1281291284]

約数ペア:

[(1, 1281291284), (2, 640645642), (4, 320322821), (7, 183041612), (13, 98560868), (14, 91520806), (26, 49280434), (28, 45760403), (52, 24640217), (91, 14080124), (173, 7406308), (182, 7040062), (346, 3703154), (364, 3520031), (692, 1851577), (1211, 1058044), (2249, 569716), (2422, 529022), (4498, 284858), (4844, 264511), (8996, 142429), (15743, 81388), (20347, 62972), (31486, 40694)]