280859425

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1097}}^1$

素因数の和:1151

約数の個数: 72

約数和(自身を含む): 465639840

約数和(自身を除く): 184780415

約数列:

[1, 5, 7, 11, 19, 25, 35, 49, 55, 77, 95, 133, 175, 209, 245, 275, 385, 475, 539, 665, 931, 1045, 1097, 1225, 1463, 1925, 2695, 3325, 4655, 5225, 5485, 7315, 7679, 10241, 12067, 13475, 20843, 23275, 27425, 36575, 38395, 51205, 53753, 60335, 84469, 104215, 145901, 191975, 229273, 256025, 268765, 301675, 422345, 521075, 591283, 729505, 1021307, 1146365, 1343825, 1604911, 2111725, 2956415, 3647525, 5106535, 5731825, 8024555, 11234377, 14782075, 25532675, 40122775, 56171885, 280859425]

約数ペア:

[(1, 280859425), (5, 56171885), (7, 40122775), (11, 25532675), (19, 14782075), (25, 11234377), (35, 8024555), (49, 5731825), (55, 5106535), (77, 3647525), (95, 2956415), (133, 2111725), (175, 1604911), (209, 1343825), (245, 1146365), (275, 1021307), (385, 729505), (475, 591283), (539, 521075), (665, 422345), (931, 301675), (1045, 268765), (1097, 256025), (1225, 229273), (1463, 191975), (1925, 145901), (2695, 104215), (3325, 84469), (4655, 60335), (5225, 53753), (5485, 51205), (7315, 38395), (7679, 36575), (10241, 27425), (12067, 23275), (13475, 20843)]