28011879

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{683}}^1$

素因数の和:737

約数の個数: 48

約数和(自身を含む): 49904640

約数和(自身を除く): 21892761

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 651, 683, 837, 1323, 1519, 1953, 2049, 4557, 4781, 5859, 6147, 13671, 14343, 18441, 21173, 33467, 41013, 43029, 63519, 100401, 129087, 148211, 190557, 301203, 444633, 571671, 903609, 1037477, 1333899, 3112431, 4001697, 9337293, 28011879]

約数ペア:

[(1, 28011879), (3, 9337293), (7, 4001697), (9, 3112431), (21, 1333899), (27, 1037477), (31, 903609), (49, 571671), (63, 444633), (93, 301203), (147, 190557), (189, 148211), (217, 129087), (279, 100401), (441, 63519), (651, 43029), (683, 41013), (837, 33467), (1323, 21173), (1519, 18441), (1953, 14343), (2049, 13671), (4557, 6147), (4781, 5859)]