81317898

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^2\times {\mathrm{1567}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 186842880

約数和(自身を除く): 105524982

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 186, 279, 558, 837, 961, 1567, 1674, 1922, 2883, 3134, 4701, 5766, 8649, 9402, 14103, 17298, 25947, 28206, 42309, 48577, 51894, 84618, 97154, 145731, 291462, 437193, 874386, 1311579, 1505887, 2623158, 3011774, 4517661, 9035322, 13552983, 27105966, 40658949, 81317898]

約数ペア:

[(1, 81317898), (2, 40658949), (3, 27105966), (6, 13552983), (9, 9035322), (18, 4517661), (27, 3011774), (31, 2623158), (54, 1505887), (62, 1311579), (93, 874386), (186, 437193), (279, 291462), (558, 145731), (837, 97154), (961, 84618), (1567, 51894), (1674, 48577), (1922, 42309), (2883, 28206), (3134, 25947), (4701, 17298), (5766, 14103), (8649, 9402)]