28640313

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 48222720

約数和(自身を除く): 19582407

約数列:

[1, 3, 9, 13, 23, 29, 39, 69, 87, 117, 207, 261, 299, 367, 377, 667, 897, 1101, 1131, 2001, 2691, 3303, 3393, 4771, 6003, 8441, 8671, 10643, 14313, 25323, 26013, 31929, 42939, 75969, 78039, 95787, 109733, 138359, 244789, 329199, 415077, 734367, 987597, 1245231, 2203101, 3182257, 9546771, 28640313]

約数ペア:

[(1, 28640313), (3, 9546771), (9, 3182257), (13, 2203101), (23, 1245231), (29, 987597), (39, 734367), (69, 415077), (87, 329199), (117, 244789), (207, 138359), (261, 109733), (299, 95787), (367, 78039), (377, 75969), (667, 42939), (897, 31929), (1101, 26013), (1131, 25323), (2001, 14313), (2691, 10643), (3303, 8671), (3393, 8441), (4771, 6003)]