7645990

素因数分解:

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

素因数の和:189

約数の個数: 48

約数和(自身を含む): 15513120

約数和(自身を除く): 7867130

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 89, 110, 121, 142, 178, 242, 355, 445, 605, 710, 781, 890, 979, 1210, 1562, 1958, 3905, 4895, 6319, 7810, 8591, 9790, 10769, 12638, 17182, 21538, 31595, 42955, 53845, 63190, 69509, 85910, 107690, 139018, 347545, 695090, 764599, 1529198, 3822995, 7645990]

約数ペア:

[(1, 7645990), (2, 3822995), (5, 1529198), (10, 764599), (11, 695090), (22, 347545), (55, 139018), (71, 107690), (89, 85910), (110, 69509), (121, 63190), (142, 53845), (178, 42955), (242, 31595), (355, 21538), (445, 17182), (605, 12638), (710, 10769), (781, 9790), (890, 8591), (979, 7810), (1210, 6319), (1562, 4895), (1958, 3905)]