19918672

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{283}}^1$

素因数の和:427

約数の個数: 40

約数和(自身を含む): 39934944

約数和(自身を除く): 20016272

約数列:

[1, 2, 4, 8, 16, 53, 83, 106, 166, 212, 283, 332, 424, 566, 664, 848, 1132, 1328, 2264, 4399, 4528, 8798, 14999, 17596, 23489, 29998, 35192, 46978, 59996, 70384, 93956, 119992, 187912, 239984, 375824, 1244917, 2489834, 4979668, 9959336, 19918672]

約数ペア:

[(1, 19918672), (2, 9959336), (4, 4979668), (8, 2489834), (16, 1244917), (53, 375824), (83, 239984), (106, 187912), (166, 119992), (212, 93956), (283, 70384), (332, 59996), (424, 46978), (566, 35192), (664, 29998), (848, 23489), (1132, 17596), (1328, 14999), (2264, 8798), (4399, 4528)]