20981646

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1246

約数の個数: 64

約数和(自身を含む): 54466560

約数和(自身を除く): 33484914

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 47, 54, 63, 94, 126, 141, 189, 282, 329, 378, 423, 658, 846, 987, 1181, 1269, 1974, 2362, 2538, 2961, 3543, 5922, 7086, 8267, 8883, 10629, 16534, 17766, 21258, 24801, 31887, 49602, 55507, 63774, 74403, 111014, 148806, 166521, 223209, 333042, 388549, 446418, 499563, 777098, 999126, 1165647, 1498689, 2331294, 2997378, 3496941, 6993882, 10490823, 20981646]

約数ペア:

[(1, 20981646), (2, 10490823), (3, 6993882), (6, 3496941), (7, 2997378), (9, 2331294), (14, 1498689), (18, 1165647), (21, 999126), (27, 777098), (42, 499563), (47, 446418), (54, 388549), (63, 333042), (94, 223209), (126, 166521), (141, 148806), (189, 111014), (282, 74403), (329, 63774), (378, 55507), (423, 49602), (658, 31887), (846, 24801), (987, 21258), (1181, 17766), (1269, 16534), (1974, 10629), (2362, 8883), (2538, 8267), (2961, 7086), (3543, 5922)]