21137877

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{317}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 31749120

約数和(自身を除く): 10611243

約数列:

[1, 3, 9, 31, 93, 239, 279, 317, 717, 951, 2151, 2853, 7409, 9827, 22227, 29481, 66681, 75763, 88443, 227289, 681867, 2348653, 7045959, 21137877]

約数ペア:

[(1, 21137877), (3, 7045959), (9, 2348653), (31, 681867), (93, 227289), (239, 88443), (279, 75763), (317, 66681), (717, 29481), (951, 22227), (2151, 9827), (2853, 7409)]