31321820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{5419}}^1$

素因数の和:5462

約数の個数: 36

約数和(自身を含む): 69885480

約数和(自身を除く): 38563660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5419, 5780, 10838, 21676, 27095, 54190, 92123, 108380, 184246, 368492, 460615, 921230, 1566091, 1842460, 3132182, 6264364, 7830455, 15660910, 31321820]

約数ペア:

[(1, 31321820), (2, 15660910), (4, 7830455), (5, 6264364), (10, 3132182), (17, 1842460), (20, 1566091), (34, 921230), (68, 460615), (85, 368492), (170, 184246), (289, 108380), (340, 92123), (578, 54190), (1156, 27095), (1445, 21676), (2890, 10838), (5419, 5780)]