20210331

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7477}}^1$

素因数の和:7550

約数の個数: 16

約数和(自身を含む): 29074464

約数和(自身を除く): 8864133

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7477, 22431, 127109, 381327, 396281, 1188843, 6736777, 20210331]

約数ペア:

[(1, 20210331), (3, 6736777), (17, 1188843), (51, 396281), (53, 381327), (159, 127109), (901, 22431), (2703, 7477)]