278300841

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1063}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 468687744

約数和(自身を除く): 190386903

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 137, 147, 273, 411, 637, 959, 1063, 1781, 1911, 2877, 3189, 5343, 6713, 7441, 12467, 13819, 20139, 22323, 37401, 41457, 52087, 87269, 96733, 145631, 156261, 261807, 290199, 436893, 677131, 1019417, 1893203, 2031393, 3058251, 5679609, 7135919, 13252421, 21407757, 39757263, 92766947, 278300841]

約数ペア:

[(1, 278300841), (3, 92766947), (7, 39757263), (13, 21407757), (21, 13252421), (39, 7135919), (49, 5679609), (91, 3058251), (137, 2031393), (147, 1893203), (273, 1019417), (411, 677131), (637, 436893), (959, 290199), (1063, 261807), (1781, 156261), (1911, 145631), (2877, 96733), (3189, 87269), (5343, 52087), (6713, 41457), (7441, 37401), (12467, 22323), (13819, 20139)]