21255032

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{373}}^1\times {\mathrm{419}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 21156568

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 373, 419, 746, 838, 1492, 1676, 2984, 3352, 6341, 7123, 12682, 14246, 25364, 28492, 50728, 56984, 156287, 312574, 625148, 1250296, 2656879, 5313758, 10627516, 21255032]

約数ペア:

[(1, 21255032), (2, 10627516), (4, 5313758), (8, 2656879), (17, 1250296), (34, 625148), (68, 312574), (136, 156287), (373, 56984), (419, 50728), (746, 28492), (838, 25364), (1492, 14246), (1676, 12682), (2984, 7123), (3352, 6341)]