28403739

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 51251200

約数和(自身を除く): 22847461

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 79, 91, 117, 237, 273, 439, 553, 711, 819, 1027, 1317, 1659, 3073, 3081, 3951, 4977, 5707, 7189, 9219, 9243, 17121, 21567, 27657, 34681, 39949, 51363, 64701, 104043, 119847, 242767, 312129, 359541, 450853, 728301, 1352559, 2184903, 3155971, 4057677, 9467913, 28403739]

約数ペア:

[(1, 28403739), (3, 9467913), (7, 4057677), (9, 3155971), (13, 2184903), (21, 1352559), (39, 728301), (63, 450853), (79, 359541), (91, 312129), (117, 242767), (237, 119847), (273, 104043), (439, 64701), (553, 51363), (711, 39949), (819, 34681), (1027, 27657), (1317, 21567), (1659, 17121), (3073, 9243), (3081, 9219), (3951, 7189), (4977, 5707)]