21272732

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{1307}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 40249776

約数和(自身を除く): 18977044

約数列:

[1, 2, 4, 13, 26, 52, 313, 626, 1252, 1307, 2614, 4069, 5228, 8138, 16276, 16991, 33982, 67964, 409091, 818182, 1636364, 5318183, 10636366, 21272732]

約数ペア:

[(1, 21272732), (2, 10636366), (4, 5318183), (13, 1636364), (26, 818182), (52, 409091), (313, 67964), (626, 33982), (1252, 16991), (1307, 16276), (2614, 8138), (4069, 5228)]