81328360

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{947}}^1$

素因数の和:1090

約数の個数: 64

約数和(自身を含む): 194529600

約数和(自身を除く): 113201240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 113, 152, 190, 226, 380, 452, 565, 760, 904, 947, 1130, 1894, 2147, 2260, 3788, 4294, 4520, 4735, 7576, 8588, 9470, 10735, 17176, 17993, 18940, 21470, 35986, 37880, 42940, 71972, 85880, 89965, 107011, 143944, 179930, 214022, 359860, 428044, 535055, 719720, 856088, 1070110, 2033209, 2140220, 4066418, 4280440, 8132836, 10166045, 16265672, 20332090, 40664180, 81328360]

約数ペア:

[(1, 81328360), (2, 40664180), (4, 20332090), (5, 16265672), (8, 10166045), (10, 8132836), (19, 4280440), (20, 4066418), (38, 2140220), (40, 2033209), (76, 1070110), (95, 856088), (113, 719720), (152, 535055), (190, 428044), (226, 359860), (380, 214022), (452, 179930), (565, 143944), (760, 107011), (904, 89965), (947, 85880), (1130, 71972), (1894, 42940), (2147, 37880), (2260, 35986), (3788, 21470), (4294, 18940), (4520, 17993), (4735, 17176), (7576, 10735), (8588, 9470)]