21236680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27943}}^1$

素因数の和:27973

約数の個数: 32

約数和(自身を含む): 50299200

約数和(自身を除く): 29062520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27943, 55886, 111772, 139715, 223544, 279430, 530917, 558860, 1061834, 1117720, 2123668, 2654585, 4247336, 5309170, 10618340, 21236680]

約数ペア:

[(1, 21236680), (2, 10618340), (4, 5309170), (5, 4247336), (8, 2654585), (10, 2123668), (19, 1117720), (20, 1061834), (38, 558860), (40, 530917), (76, 279430), (95, 223544), (152, 139715), (190, 111772), (380, 55886), (760, 27943)]