645617755

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{479}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 835453440

約数和(自身を除く): 189835685

約数列:

[1, 5, 17, 85, 101, 157, 479, 505, 785, 1717, 2395, 2669, 8143, 8585, 13345, 15857, 40715, 48379, 75203, 79285, 241895, 269569, 376015, 822443, 1278451, 1347845, 4112215, 6392255, 7595503, 37977515, 129123551, 645617755]

約数ペア:

[(1, 645617755), (5, 129123551), (17, 37977515), (85, 7595503), (101, 6392255), (157, 4112215), (479, 1347845), (505, 1278451), (785, 822443), (1717, 376015), (2395, 269569), (2669, 241895), (8143, 79285), (8585, 75203), (13345, 48379), (15857, 40715)]