28106253

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 52498368

約数和(自身を除く): 24392115

約数列:

[1, 3, 7, 9, 17, 21, 23, 49, 51, 63, 69, 119, 147, 153, 161, 163, 207, 357, 391, 441, 483, 489, 833, 1071, 1127, 1141, 1173, 1449, 1467, 2499, 2737, 2771, 3381, 3423, 3519, 3749, 7497, 7987, 8211, 8313, 10143, 10269, 11247, 19159, 19397, 23961, 24633, 24939, 26243, 33741, 57477, 58191, 63733, 71883, 78729, 135779, 172431, 174573, 183701, 191199, 236187, 407337, 446131, 551103, 573597, 1222011, 1338393, 1653309, 3122917, 4015179, 9368751, 28106253]

約数ペア:

[(1, 28106253), (3, 9368751), (7, 4015179), (9, 3122917), (17, 1653309), (21, 1338393), (23, 1222011), (49, 573597), (51, 551103), (63, 446131), (69, 407337), (119, 236187), (147, 191199), (153, 183701), (161, 174573), (163, 172431), (207, 135779), (357, 78729), (391, 71883), (441, 63733), (483, 58191), (489, 57477), (833, 33741), (1071, 26243), (1127, 24939), (1141, 24633), (1173, 23961), (1449, 19397), (1467, 19159), (2499, 11247), (2737, 10269), (2771, 10143), (3381, 8313), (3423, 8211), (3519, 7987), (3749, 7497)]