8791420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 20412000

約数和(自身を除く): 11620580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 449, 890, 898, 979, 1780, 1796, 1958, 2245, 3916, 4490, 4895, 4939, 8980, 9790, 9878, 19580, 19756, 24695, 39961, 49390, 79922, 98780, 159844, 199805, 399610, 439571, 799220, 879142, 1758284, 2197855, 4395710, 8791420]

約数ペア:

[(1, 8791420), (2, 4395710), (4, 2197855), (5, 1758284), (10, 879142), (11, 799220), (20, 439571), (22, 399610), (44, 199805), (55, 159844), (89, 98780), (110, 79922), (178, 49390), (220, 39961), (356, 24695), (445, 19756), (449, 19580), (890, 9878), (898, 9790), (979, 8980), (1780, 4939), (1796, 4895), (1958, 4490), (2245, 3916)]