17994020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{919}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 23737180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 919, 979, 1780, 1838, 1958, 3676, 3916, 4595, 4895, 9190, 9790, 10109, 18380, 19580, 20218, 40436, 50545, 81791, 101090, 163582, 202180, 327164, 408955, 817910, 899701, 1635820, 1799402, 3598804, 4498505, 8997010, 17994020]

約数ペア:

[(1, 17994020), (2, 8997010), (4, 4498505), (5, 3598804), (10, 1799402), (11, 1635820), (20, 899701), (22, 817910), (44, 408955), (55, 327164), (89, 202180), (110, 163582), (178, 101090), (220, 81791), (356, 50545), (445, 40436), (890, 20218), (919, 19580), (979, 18380), (1780, 10109), (1838, 9790), (1958, 9190), (3676, 4895), (3916, 4595)]