21032492

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{641}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 39762912

約数和(自身を除く): 18730420

約数列:

[1, 2, 4, 13, 26, 52, 631, 641, 1262, 1282, 2524, 2564, 8203, 8333, 16406, 16666, 32812, 33332, 404471, 808942, 1617884, 5258123, 10516246, 21032492]

約数ペア:

[(1, 21032492), (2, 10516246), (4, 5258123), (13, 1617884), (26, 808942), (52, 404471), (631, 33332), (641, 32812), (1262, 16666), (1282, 16406), (2524, 8333), (2564, 8203)]