18810995

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 8560525

約数列:

[1, 5, 7, 29, 35, 43, 145, 203, 215, 301, 431, 1015, 1247, 1505, 2155, 3017, 6235, 8729, 12499, 15085, 18533, 43645, 62495, 87493, 92665, 129731, 437465, 537457, 648655, 2687285, 3762199, 18810995]

約数ペア:

[(1, 18810995), (5, 3762199), (7, 2687285), (29, 648655), (35, 537457), (43, 437465), (145, 129731), (203, 92665), (215, 87493), (301, 62495), (431, 43645), (1015, 18533), (1247, 15085), (1505, 12499), (2155, 8729), (3017, 6235)]