129879640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{1289}}^1$

素因数の和:1540

約数の個数: 64

約数和(自身を含む): 320436000

約数和(自身を除く): 190556360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 229, 440, 458, 916, 1145, 1289, 1832, 2290, 2519, 2578, 4580, 5038, 5156, 6445, 9160, 10076, 10312, 12595, 12890, 14179, 20152, 25190, 25780, 28358, 50380, 51560, 56716, 70895, 100760, 113432, 141790, 283580, 295181, 567160, 590362, 1180724, 1475905, 2361448, 2951810, 3246991, 5903620, 6493982, 11807240, 12987964, 16234955, 25975928, 32469910, 64939820, 129879640]

約数ペア:

[(1, 129879640), (2, 64939820), (4, 32469910), (5, 25975928), (8, 16234955), (10, 12987964), (11, 11807240), (20, 6493982), (22, 5903620), (40, 3246991), (44, 2951810), (55, 2361448), (88, 1475905), (110, 1180724), (220, 590362), (229, 567160), (440, 295181), (458, 283580), (916, 141790), (1145, 113432), (1289, 100760), (1832, 70895), (2290, 56716), (2519, 51560), (2578, 50380), (4580, 28358), (5038, 25780), (5156, 25190), (6445, 20152), (9160, 14179), (10076, 12890), (10312, 12595)]