20986938

素因数分解:

$2^1\times 3^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 55910400

約数和(自身を除く): 34923462

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 31, 42, 54, 62, 63, 81, 93, 126, 162, 186, 189, 199, 217, 243, 279, 378, 398, 434, 486, 558, 567, 597, 651, 837, 1134, 1194, 1302, 1393, 1674, 1701, 1791, 1953, 2511, 2786, 3402, 3582, 3906, 4179, 5022, 5373, 5859, 6169, 7533, 8358, 10746, 11718, 12338, 12537, 15066, 16119, 17577, 18507, 25074, 32238, 35154, 37014, 37611, 43183, 48357, 52731, 55521, 75222, 86366, 96714, 105462, 111042, 112833, 129549, 166563, 225666, 259098, 333126, 338499, 388647, 499689, 676998, 777294, 999378, 1165941, 1499067, 2331882, 2998134, 3497823, 6995646, 10493469, 20986938]

約数ペア:

[(1, 20986938), (2, 10493469), (3, 6995646), (6, 3497823), (7, 2998134), (9, 2331882), (14, 1499067), (18, 1165941), (21, 999378), (27, 777294), (31, 676998), (42, 499689), (54, 388647), (62, 338499), (63, 333126), (81, 259098), (93, 225666), (126, 166563), (162, 129549), (186, 112833), (189, 111042), (199, 105462), (217, 96714), (243, 86366), (279, 75222), (378, 55521), (398, 52731), (434, 48357), (486, 43183), (558, 37611), (567, 37014), (597, 35154), (651, 32238), (837, 25074), (1134, 18507), (1194, 17577), (1302, 16119), (1393, 15066), (1674, 12537), (1701, 12338), (1791, 11718), (1953, 10746), (2511, 8358), (2786, 7533), (3402, 6169), (3582, 5859), (3906, 5373), (4179, 5022)]