81961230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{210157}}^1$

素因数の和:210180

約数の個数: 32

約数和(自身を含む): 211839264

約数和(自身を除く): 129878034

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 210157, 420314, 630471, 1050785, 1260942, 2101570, 2732041, 3152355, 5464082, 6304710, 8196123, 13660205, 16392246, 27320410, 40980615, 81961230]

約数ペア:

[(1, 81961230), (2, 40980615), (3, 27320410), (5, 16392246), (6, 13660205), (10, 8196123), (13, 6304710), (15, 5464082), (26, 3152355), (30, 2732041), (39, 2101570), (65, 1260942), (78, 1050785), (130, 630471), (195, 420314), (390, 210157)]