420808240

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{78509}}^1$

素因数の和:78589

約数の個数: 40

約数和(自身を含む): 992994480

約数和(自身を除く): 572186240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 78509, 157018, 314036, 392545, 628072, 785090, 1256144, 1570180, 3140360, 5260103, 6280720, 10520206, 21040412, 26300515, 42080824, 52601030, 84161648, 105202060, 210404120, 420808240]

約数ペア:

[(1, 420808240), (2, 210404120), (4, 105202060), (5, 84161648), (8, 52601030), (10, 42080824), (16, 26300515), (20, 21040412), (40, 10520206), (67, 6280720), (80, 5260103), (134, 3140360), (268, 1570180), (335, 1256144), (536, 785090), (670, 628072), (1072, 392545), (1340, 314036), (2680, 157018), (5360, 78509)]