18702940120

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{6978709}}^1$

素因数の和:6978787

約数の個数: 32

約数和(自身を含む): 42709705200

約数和(自身を除く): 24006765080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 6978709, 13957418, 27914836, 34893545, 55829672, 69787090, 139574180, 279148360, 467573503, 935147006, 1870294012, 2337867515, 3740588024, 4675735030, 9351470060, 18702940120]

約数ペア:

[(1, 18702940120), (2, 9351470060), (4, 4675735030), (5, 3740588024), (8, 2337867515), (10, 1870294012), (20, 935147006), (40, 467573503), (67, 279148360), (134, 139574180), (268, 69787090), (335, 55829672), (536, 34893545), (670, 27914836), (1340, 13957418), (2680, 6978709)]