18689110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 20501930

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 83, 89, 110, 115, 166, 178, 230, 253, 415, 445, 506, 830, 890, 913, 979, 1265, 1826, 1909, 1958, 2047, 2530, 3818, 4094, 4565, 4895, 7387, 9130, 9545, 9790, 10235, 14774, 19090, 20470, 20999, 22517, 36935, 41998, 45034, 73870, 81257, 104995, 112585, 162514, 169901, 209990, 225170, 339802, 406285, 812570, 849505, 1699010, 1868911, 3737822, 9344555, 18689110]

約数ペア:

[(1, 18689110), (2, 9344555), (5, 3737822), (10, 1868911), (11, 1699010), (22, 849505), (23, 812570), (46, 406285), (55, 339802), (83, 225170), (89, 209990), (110, 169901), (115, 162514), (166, 112585), (178, 104995), (230, 81257), (253, 73870), (415, 45034), (445, 41998), (506, 36935), (830, 22517), (890, 20999), (913, 20470), (979, 19090), (1265, 14774), (1826, 10235), (1909, 9790), (1958, 9545), (2047, 9130), (2530, 7387), (3818, 4895), (4094, 4565)]