19979685

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 18179163

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 181, 223, 495, 543, 669, 905, 1115, 1629, 1991, 2007, 2453, 2715, 3345, 5973, 7359, 8145, 9955, 10035, 12265, 17919, 22077, 29865, 36795, 40363, 89595, 110385, 121089, 201815, 363267, 443993, 605445, 1331979, 1816335, 2219965, 3995937, 6659895, 19979685]

約数ペア:

[(1, 19979685), (3, 6659895), (5, 3995937), (9, 2219965), (11, 1816335), (15, 1331979), (33, 605445), (45, 443993), (55, 363267), (99, 201815), (165, 121089), (181, 110385), (223, 89595), (495, 40363), (543, 36795), (669, 29865), (905, 22077), (1115, 17919), (1629, 12265), (1991, 10035), (2007, 9955), (2453, 8145), (2715, 7359), (3345, 5973)]