20488131

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 30582864

約数和(自身を除く): 10094733

約数列:

[1, 3, 9, 61, 67, 183, 201, 549, 557, 603, 1671, 4087, 5013, 12261, 33977, 36783, 37319, 101931, 111957, 305793, 335871, 2276459, 6829377, 20488131]

約数ペア:

[(1, 20488131), (3, 6829377), (9, 2276459), (61, 335871), (67, 305793), (183, 111957), (201, 101931), (549, 37319), (557, 36783), (603, 33977), (1671, 12261), (4087, 5013)]