405438440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{809}}^1$

素因数の和:915

約数の個数: 128

約数和(自身を含む): 1070755200

約数和(自身を除く): 665316760

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 67, 68, 85, 88, 110, 134, 136, 170, 187, 220, 268, 335, 340, 374, 440, 536, 670, 680, 737, 748, 809, 935, 1139, 1340, 1474, 1496, 1618, 1870, 2278, 2680, 2948, 3236, 3685, 3740, 4045, 4556, 5695, 5896, 6472, 7370, 7480, 8090, 8899, 9112, 11390, 12529, 13753, 14740, 16180, 17798, 22780, 25058, 27506, 29480, 32360, 35596, 44495, 45560, 50116, 54203, 55012, 62645, 68765, 71192, 88990, 100232, 108406, 110024, 125290, 137530, 151283, 177980, 216812, 250580, 271015, 275060, 302566, 355960, 433624, 501160, 542030, 550120, 596233, 605132, 756415, 921451, 1084060, 1192466, 1210264, 1512830, 1842902, 2168120, 2384932, 2981165, 3025660, 3685804, 4607255, 4769864, 5962330, 6051320, 7371608, 9214510, 10135961, 11924660, 18429020, 20271922, 23849320, 36858040, 40543844, 50679805, 81087688, 101359610, 202719220, 405438440]

約数ペア:

[(1, 405438440), (2, 202719220), (4, 101359610), (5, 81087688), (8, 50679805), (10, 40543844), (11, 36858040), (17, 23849320), (20, 20271922), (22, 18429020), (34, 11924660), (40, 10135961), (44, 9214510), (55, 7371608), (67, 6051320), (68, 5962330), (85, 4769864), (88, 4607255), (110, 3685804), (134, 3025660), (136, 2981165), (170, 2384932), (187, 2168120), (220, 1842902), (268, 1512830), (335, 1210264), (340, 1192466), (374, 1084060), (440, 921451), (536, 756415), (670, 605132), (680, 596233), (737, 550120), (748, 542030), (809, 501160), (935, 433624), (1139, 355960), (1340, 302566), (1474, 275060), (1496, 271015), (1618, 250580), (1870, 216812), (2278, 177980), (2680, 151283), (2948, 137530), (3236, 125290), (3685, 110024), (3740, 108406), (4045, 100232), (4556, 88990), (5695, 71192), (5896, 68765), (6472, 62645), (7370, 55012), (7480, 54203), (8090, 50116), (8899, 45560), (9112, 44495), (11390, 35596), (12529, 32360), (13753, 29480), (14740, 27506), (16180, 25058), (17798, 22780)]