21415662920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7990919}}^1$

素因数の和:7990997

約数の個数: 32

約数和(自身を含む): 48904430400

約数和(自身を除く): 27488767480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7990919, 15981838, 31963676, 39954595, 63927352, 79909190, 159818380, 319636760, 535391573, 1070783146, 2141566292, 2676957865, 4283132584, 5353915730, 10707831460, 21415662920]

約数ペア:

[(1, 21415662920), (2, 10707831460), (4, 5353915730), (5, 4283132584), (8, 2676957865), (10, 2141566292), (20, 1070783146), (40, 535391573), (67, 319636760), (134, 159818380), (268, 79909190), (335, 63927352), (536, 39954595), (670, 31963676), (1340, 15981838), (2680, 7990919)]