21053406

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 49121280

約数和(自身を除く): 28067874

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 103, 114, 163, 206, 209, 309, 326, 418, 489, 618, 627, 978, 1133, 1254, 1793, 1957, 2266, 3097, 3399, 3586, 3914, 5379, 5871, 6194, 6798, 9291, 10758, 11742, 16789, 18582, 21527, 33578, 34067, 43054, 50367, 64581, 68134, 100734, 102201, 129162, 184679, 204402, 318991, 369358, 554037, 637982, 956973, 1108074, 1913946, 3508901, 7017802, 10526703, 21053406]

約数ペア:

[(1, 21053406), (2, 10526703), (3, 7017802), (6, 3508901), (11, 1913946), (19, 1108074), (22, 956973), (33, 637982), (38, 554037), (57, 369358), (66, 318991), (103, 204402), (114, 184679), (163, 129162), (206, 102201), (209, 100734), (309, 68134), (326, 64581), (418, 50367), (489, 43054), (618, 34067), (627, 33578), (978, 21527), (1133, 18582), (1254, 16789), (1793, 11742), (1957, 10758), (2266, 9291), (3097, 6798), (3399, 6194), (3586, 5871), (3914, 5379)]