201978985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{809}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 274337280

約数和(自身を除く): 72358295

約数列:

[1, 5, 13, 23, 65, 115, 167, 299, 809, 835, 1495, 2171, 3841, 4045, 10517, 10855, 18607, 19205, 49933, 52585, 93035, 135103, 241891, 249665, 675515, 1209455, 1756339, 3107369, 8781695, 15536845, 40395797, 201978985]

約数ペア:

[(1, 201978985), (5, 40395797), (13, 15536845), (23, 8781695), (65, 3107369), (115, 1756339), (167, 1209455), (299, 675515), (809, 249665), (835, 241891), (1495, 135103), (2171, 93035), (3841, 52585), (4045, 49933), (10517, 19205), (10855, 18607)]