21389536

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:212

約数の個数: 96

約数和(自身を含む): 52581312

約数和(自身を除く): 31191776

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 41, 56, 68, 82, 112, 119, 136, 137, 164, 224, 238, 272, 274, 287, 328, 476, 544, 548, 574, 656, 697, 952, 959, 1096, 1148, 1312, 1394, 1904, 1918, 2192, 2296, 2329, 2788, 3808, 3836, 4384, 4592, 4658, 4879, 5576, 5617, 7672, 9184, 9316, 9758, 11152, 11234, 15344, 16303, 18632, 19516, 22304, 22468, 30688, 32606, 37264, 39032, 39319, 44936, 65212, 74528, 78064, 78638, 89872, 95489, 130424, 156128, 157276, 179744, 190978, 260848, 314552, 381956, 521696, 629104, 668423, 763912, 1258208, 1336846, 1527824, 2673692, 3055648, 5347384, 10694768, 21389536]

約数ペア:

[(1, 21389536), (2, 10694768), (4, 5347384), (7, 3055648), (8, 2673692), (14, 1527824), (16, 1336846), (17, 1258208), (28, 763912), (32, 668423), (34, 629104), (41, 521696), (56, 381956), (68, 314552), (82, 260848), (112, 190978), (119, 179744), (136, 157276), (137, 156128), (164, 130424), (224, 95489), (238, 89872), (272, 78638), (274, 78064), (287, 74528), (328, 65212), (476, 44936), (544, 39319), (548, 39032), (574, 37264), (656, 32606), (697, 30688), (952, 22468), (959, 22304), (1096, 19516), (1148, 18632), (1312, 16303), (1394, 15344), (1904, 11234), (1918, 11152), (2192, 9758), (2296, 9316), (2329, 9184), (2788, 7672), (3808, 5617), (3836, 5576), (4384, 4879), (4592, 4658)]