20006480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19237}}^1$

素因数の和:19263

約数の個数: 40

約数和(自身を含む): 50095752

約数和(自身を除く): 30089272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19237, 38474, 76948, 96185, 153896, 192370, 250081, 307792, 384740, 500162, 769480, 1000324, 1250405, 1538960, 2000648, 2500810, 4001296, 5001620, 10003240, 20006480]

約数ペア:

[(1, 20006480), (2, 10003240), (4, 5001620), (5, 4001296), (8, 2500810), (10, 2000648), (13, 1538960), (16, 1250405), (20, 1000324), (26, 769480), (40, 500162), (52, 384740), (65, 307792), (80, 250081), (104, 192370), (130, 153896), (208, 96185), (260, 76948), (520, 38474), (1040, 19237)]