40028877

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 72806400

約数和(自身を除く): 32777523

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 71, 133, 157, 171, 189, 213, 399, 471, 497, 513, 639, 1099, 1197, 1349, 1413, 1491, 1917, 2983, 3297, 3591, 4047, 4239, 4473, 8949, 9443, 9891, 11147, 12141, 13419, 20881, 26847, 28329, 29673, 33441, 36423, 62643, 78029, 80541, 84987, 100323, 187929, 211793, 234087, 254961, 300969, 563787, 635379, 702261, 1482551, 1906137, 2106783, 4447653, 5718411, 13342959, 40028877]

約数ペア:

[(1, 40028877), (3, 13342959), (7, 5718411), (9, 4447653), (19, 2106783), (21, 1906137), (27, 1482551), (57, 702261), (63, 635379), (71, 563787), (133, 300969), (157, 254961), (171, 234087), (189, 211793), (213, 187929), (399, 100323), (471, 84987), (497, 80541), (513, 78029), (639, 62643), (1099, 36423), (1197, 33441), (1349, 29673), (1413, 28329), (1491, 26847), (1917, 20881), (2983, 13419), (3297, 12141), (3591, 11147), (4047, 9891), (4239, 9443), (4473, 8949)]