18872553

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{227}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 29942784

約数和(自身を除く): 11070231

約数列:

[1, 3, 7, 21, 37, 107, 111, 227, 259, 321, 681, 749, 777, 1589, 2247, 3959, 4767, 8399, 11877, 24289, 25197, 27713, 58793, 72867, 83139, 170023, 176379, 510069, 898693, 2696079, 6290851, 18872553]

約数ペア:

[(1, 18872553), (3, 6290851), (7, 2696079), (21, 898693), (37, 510069), (107, 176379), (111, 170023), (227, 83139), (259, 72867), (321, 58793), (681, 27713), (749, 25197), (777, 24289), (1589, 11877), (2247, 8399), (3959, 4767)]