81394456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{421}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 180784800

約数和(自身を除く): 99390344

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 421, 572, 676, 842, 1144, 1352, 1684, 1859, 2197, 3368, 3718, 4394, 4631, 5473, 7436, 8788, 9262, 10946, 14872, 17576, 18524, 21892, 24167, 37048, 43784, 48334, 60203, 71149, 96668, 120406, 142298, 193336, 240812, 284596, 481624, 569192, 782639, 924937, 1565278, 1849874, 3130556, 3699748, 6261112, 7399496, 10174307, 20348614, 40697228, 81394456]

約数ペア:

[(1, 81394456), (2, 40697228), (4, 20348614), (8, 10174307), (11, 7399496), (13, 6261112), (22, 3699748), (26, 3130556), (44, 1849874), (52, 1565278), (88, 924937), (104, 782639), (143, 569192), (169, 481624), (286, 284596), (338, 240812), (421, 193336), (572, 142298), (676, 120406), (842, 96668), (1144, 71149), (1352, 60203), (1684, 48334), (1859, 43784), (2197, 37048), (3368, 24167), (3718, 21892), (4394, 18524), (4631, 17576), (5473, 14872), (7436, 10946), (8788, 9262)]