28005705

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1015

約数の個数: 72

約数和(自身を含む): 60874632

約数和(自身を除く): 32868927

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 49, 63, 65, 91, 105, 117, 147, 195, 245, 273, 315, 441, 455, 585, 637, 735, 819, 977, 1365, 1911, 2205, 2931, 3185, 4095, 4885, 5733, 6839, 8793, 9555, 12701, 14655, 20517, 28665, 34195, 38103, 43965, 47873, 61551, 63505, 88907, 102585, 114309, 143619, 190515, 239365, 266721, 307755, 430857, 444535, 571545, 622349, 718095, 800163, 1333605, 1867047, 2154285, 3111745, 4000815, 5601141, 9335235, 28005705]

約数ペア:

[(1, 28005705), (3, 9335235), (5, 5601141), (7, 4000815), (9, 3111745), (13, 2154285), (15, 1867047), (21, 1333605), (35, 800163), (39, 718095), (45, 622349), (49, 571545), (63, 444535), (65, 430857), (91, 307755), (105, 266721), (117, 239365), (147, 190515), (195, 143619), (245, 114309), (273, 102585), (315, 88907), (441, 63505), (455, 61551), (585, 47873), (637, 43965), (735, 38103), (819, 34195), (977, 28665), (1365, 20517), (1911, 14655), (2205, 12701), (2931, 9555), (3185, 8793), (4095, 6839), (4885, 5733)]