1771990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 3538080

約数和(自身を除く): 1766090

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 181, 362, 445, 890, 905, 979, 1810, 1958, 1991, 3982, 4895, 9790, 9955, 16109, 19910, 32218, 80545, 161090, 177199, 354398, 885995, 1771990]

約数ペア:

[(1, 1771990), (2, 885995), (5, 354398), (10, 177199), (11, 161090), (22, 80545), (55, 32218), (89, 19910), (110, 16109), (178, 9955), (181, 9790), (362, 4895), (445, 3982), (890, 1991), (905, 1958), (979, 1810)]