19639984

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 120

約数和(自身を含む): 49871808

約数和(自身を除く): 30231824

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 41, 47, 49, 52, 56, 82, 91, 94, 98, 104, 112, 164, 182, 188, 196, 208, 287, 328, 329, 364, 376, 392, 533, 574, 611, 637, 656, 658, 728, 752, 784, 1066, 1148, 1222, 1274, 1316, 1456, 1927, 2009, 2132, 2296, 2303, 2444, 2548, 2632, 3731, 3854, 4018, 4264, 4277, 4592, 4606, 4888, 5096, 5264, 7462, 7708, 8036, 8528, 8554, 9212, 9776, 10192, 13489, 14924, 15416, 16072, 17108, 18424, 25051, 26117, 26978, 29848, 29939, 30832, 32144, 34216, 36848, 50102, 52234, 53956, 59696, 59878, 68432, 94423, 100204, 104468, 107912, 119756, 175357, 188846, 200408, 208936, 215824, 239512, 350714, 377692, 400816, 417872, 479024, 701428, 755384, 1227499, 1402856, 1510768, 2454998, 2805712, 4909996, 9819992, 19639984]

約数ペア:

[(1, 19639984), (2, 9819992), (4, 4909996), (7, 2805712), (8, 2454998), (13, 1510768), (14, 1402856), (16, 1227499), (26, 755384), (28, 701428), (41, 479024), (47, 417872), (49, 400816), (52, 377692), (56, 350714), (82, 239512), (91, 215824), (94, 208936), (98, 200408), (104, 188846), (112, 175357), (164, 119756), (182, 107912), (188, 104468), (196, 100204), (208, 94423), (287, 68432), (328, 59878), (329, 59696), (364, 53956), (376, 52234), (392, 50102), (533, 36848), (574, 34216), (611, 32144), (637, 30832), (656, 29939), (658, 29848), (728, 26978), (752, 26117), (784, 25051), (1066, 18424), (1148, 17108), (1222, 16072), (1274, 15416), (1316, 14924), (1456, 13489), (1927, 10192), (2009, 9776), (2132, 9212), (2296, 8554), (2303, 8528), (2444, 8036), (2548, 7708), (2632, 7462), (3731, 5264), (3854, 5096), (4018, 4888), (4264, 4606), (4277, 4592)]