28252028

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 62339760

約数和(自身を除く): 34087732

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 61, 68, 98, 119, 122, 139, 196, 238, 244, 278, 427, 476, 556, 833, 854, 973, 1037, 1666, 1708, 1946, 2074, 2363, 2989, 3332, 3892, 4148, 4726, 5978, 6811, 7259, 8479, 9452, 11956, 13622, 14518, 16541, 16958, 27244, 29036, 33082, 33916, 50813, 59353, 66164, 101626, 115787, 118706, 144143, 203252, 231574, 237412, 288286, 415471, 463148, 576572, 830942, 1009001, 1661884, 2018002, 4036004, 7063007, 14126014, 28252028]

約数ペア:

[(1, 28252028), (2, 14126014), (4, 7063007), (7, 4036004), (14, 2018002), (17, 1661884), (28, 1009001), (34, 830942), (49, 576572), (61, 463148), (68, 415471), (98, 288286), (119, 237412), (122, 231574), (139, 203252), (196, 144143), (238, 118706), (244, 115787), (278, 101626), (427, 66164), (476, 59353), (556, 50813), (833, 33916), (854, 33082), (973, 29036), (1037, 27244), (1666, 16958), (1708, 16541), (1946, 14518), (2074, 13622), (2363, 11956), (2989, 9452), (3332, 8479), (3892, 7259), (4148, 6811), (4726, 5978)]