80415920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77323}}^1$

素因数の和:77349

約数の個数: 40

約数和(自身を含む): 201351696

約数和(自身を除く): 120935776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 77323, 154646, 309292, 386615, 618584, 773230, 1005199, 1237168, 1546460, 2010398, 3092920, 4020796, 5025995, 6185840, 8041592, 10051990, 16083184, 20103980, 40207960, 80415920]

約数ペア:

[(1, 80415920), (2, 40207960), (4, 20103980), (5, 16083184), (8, 10051990), (10, 8041592), (13, 6185840), (16, 5025995), (20, 4020796), (26, 3092920), (40, 2010398), (52, 1546460), (65, 1237168), (80, 1005199), (104, 773230), (130, 618584), (208, 386615), (260, 309292), (520, 154646), (1040, 77323)]