278891140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{9677}}^1$

素因数の和:9828

約数の個数: 48

約数和(自身を含む): 643857984

約数和(自身を除く): 364966844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 524, 655, 1310, 1441, 2620, 2882, 5764, 7205, 9677, 14410, 19354, 28820, 38708, 48385, 96770, 106447, 193540, 212894, 425788, 532235, 1064470, 1267687, 2128940, 2535374, 5070748, 6338435, 12676870, 13944557, 25353740, 27889114, 55778228, 69722785, 139445570, 278891140]

約数ペア:

[(1, 278891140), (2, 139445570), (4, 69722785), (5, 55778228), (10, 27889114), (11, 25353740), (20, 13944557), (22, 12676870), (44, 6338435), (55, 5070748), (110, 2535374), (131, 2128940), (220, 1267687), (262, 1064470), (524, 532235), (655, 425788), (1310, 212894), (1441, 193540), (2620, 106447), (2882, 96770), (5764, 48385), (7205, 38708), (9677, 28820), (14410, 19354)]