20977065

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1613}}^1$

素因数の和:1658

約数の個数: 36

約数和(自身を含む): 38648844

約数和(自身を除く): 17671779

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1613, 2601, 4335, 4839, 8065, 13005, 14517, 24195, 27421, 72585, 82263, 137105, 246789, 411315, 466157, 1233945, 1398471, 2330785, 4195413, 6992355, 20977065]

約数ペア:

[(1, 20977065), (3, 6992355), (5, 4195413), (9, 2330785), (15, 1398471), (17, 1233945), (45, 466157), (51, 411315), (85, 246789), (153, 137105), (255, 82263), (289, 72585), (765, 27421), (867, 24195), (1445, 14517), (1613, 13005), (2601, 8065), (4335, 4839)]