80912840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{33161}}^1$

素因数の和:33233

約数の個数: 32

約数和(自身を含む): 185043960

約数和(自身を除く): 104131120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 33161, 66322, 132644, 165805, 265288, 331610, 663220, 1326440, 2022821, 4045642, 8091284, 10114105, 16182568, 20228210, 40456420, 80912840]

約数ペア:

[(1, 80912840), (2, 40456420), (4, 20228210), (5, 16182568), (8, 10114105), (10, 8091284), (20, 4045642), (40, 2022821), (61, 1326440), (122, 663220), (244, 331610), (305, 265288), (488, 165805), (610, 132644), (1220, 66322), (2440, 33161)]