20157610

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21832790

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 71, 89, 110, 142, 145, 178, 290, 319, 355, 445, 638, 710, 781, 890, 979, 1562, 1595, 1958, 2059, 2581, 3190, 3905, 4118, 4895, 5162, 6319, 7810, 9790, 10295, 12638, 12905, 20590, 22649, 25810, 28391, 31595, 45298, 56782, 63190, 69509, 113245, 139018, 141955, 183251, 226490, 283910, 347545, 366502, 695090, 916255, 1832510, 2015761, 4031522, 10078805, 20157610]

約数ペア:

[(1, 20157610), (2, 10078805), (5, 4031522), (10, 2015761), (11, 1832510), (22, 916255), (29, 695090), (55, 366502), (58, 347545), (71, 283910), (89, 226490), (110, 183251), (142, 141955), (145, 139018), (178, 113245), (290, 69509), (319, 63190), (355, 56782), (445, 45298), (638, 31595), (710, 28391), (781, 25810), (890, 22649), (979, 20590), (1562, 12905), (1595, 12638), (1958, 10295), (2059, 9790), (2581, 7810), (3190, 6319), (3905, 5162), (4118, 4895)]