27720231

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 49152000

約数和(自身を除く): 21431769

約数列:

[1, 3, 7, 11, 21, 31, 33, 49, 77, 79, 93, 147, 217, 231, 237, 341, 343, 539, 553, 651, 869, 1023, 1029, 1519, 1617, 1659, 2387, 2449, 2607, 3773, 3871, 4557, 6083, 7161, 7347, 10633, 11319, 11613, 16709, 17143, 18249, 26939, 27097, 31899, 42581, 50127, 51429, 80817, 81291, 116963, 120001, 127743, 188573, 298067, 350889, 360003, 565719, 840007, 894201, 1320011, 2520021, 3960033, 9240077, 27720231]

約数ペア:

[(1, 27720231), (3, 9240077), (7, 3960033), (11, 2520021), (21, 1320011), (31, 894201), (33, 840007), (49, 565719), (77, 360003), (79, 350889), (93, 298067), (147, 188573), (217, 127743), (231, 120001), (237, 116963), (341, 81291), (343, 80817), (539, 51429), (553, 50127), (651, 42581), (869, 31899), (1023, 27097), (1029, 26939), (1519, 18249), (1617, 17143), (1659, 16709), (2387, 11613), (2449, 11319), (2607, 10633), (3773, 7347), (3871, 7161), (4557, 6083)]