80644240

素因数分解:

$2^4\times 5^1\times {\mathrm{677}}^1\times {\mathrm{1489}}^1$

素因数の和:2179

約数の個数: 40

約数和(自身を含む): 187900920

約数和(自身を除く): 107256680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 677, 1354, 1489, 2708, 2978, 3385, 5416, 5956, 6770, 7445, 10832, 11912, 13540, 14890, 23824, 27080, 29780, 54160, 59560, 119120, 1008053, 2016106, 4032212, 5040265, 8064424, 10080530, 16128848, 20161060, 40322120, 80644240]

約数ペア:

[(1, 80644240), (2, 40322120), (4, 20161060), (5, 16128848), (8, 10080530), (10, 8064424), (16, 5040265), (20, 4032212), (40, 2016106), (80, 1008053), (677, 119120), (1354, 59560), (1489, 54160), (2708, 29780), (2978, 27080), (3385, 23824), (5416, 14890), (5956, 13540), (6770, 11912), (7445, 10832)]