81561990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{2129}}^1$

素因数の和:3416

約数の個数: 32

約数和(自身を含む): 195994080

約数和(自身を除く): 114432090

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 1277, 2129, 2554, 3831, 4258, 6385, 6387, 7662, 10645, 12770, 12774, 19155, 21290, 31935, 38310, 63870, 2718733, 5437466, 8156199, 13593665, 16312398, 27187330, 40780995, 81561990]

約数ペア:

[(1, 81561990), (2, 40780995), (3, 27187330), (5, 16312398), (6, 13593665), (10, 8156199), (15, 5437466), (30, 2718733), (1277, 63870), (2129, 38310), (2554, 31935), (3831, 21290), (4258, 19155), (6385, 12774), (6387, 12770), (7662, 10645)]