81514840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{809}}^1$

素因数の和:1060

約数の個数: 64

約数和(自身を含む): 201204000

約数和(自身を除く): 119689160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 229, 440, 458, 809, 916, 1145, 1618, 1832, 2290, 2519, 3236, 4045, 4580, 5038, 6472, 8090, 8899, 9160, 10076, 12595, 16180, 17798, 20152, 25190, 32360, 35596, 44495, 50380, 71192, 88990, 100760, 177980, 185261, 355960, 370522, 741044, 926305, 1482088, 1852610, 2037871, 3705220, 4075742, 7410440, 8151484, 10189355, 16302968, 20378710, 40757420, 81514840]

約数ペア:

[(1, 81514840), (2, 40757420), (4, 20378710), (5, 16302968), (8, 10189355), (10, 8151484), (11, 7410440), (20, 4075742), (22, 3705220), (40, 2037871), (44, 1852610), (55, 1482088), (88, 926305), (110, 741044), (220, 370522), (229, 355960), (440, 185261), (458, 177980), (809, 100760), (916, 88990), (1145, 71192), (1618, 50380), (1832, 44495), (2290, 35596), (2519, 32360), (3236, 25190), (4045, 20152), (4580, 17798), (5038, 16180), (6472, 12595), (8090, 10076), (8899, 9160)]