18520208

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 44354304

約数和(自身を除く): 25834096

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 71, 112, 119, 136, 137, 142, 238, 272, 274, 284, 476, 497, 548, 568, 952, 959, 994, 1096, 1136, 1207, 1904, 1918, 1988, 2192, 2329, 2414, 3836, 3976, 4658, 4828, 7672, 7952, 8449, 9316, 9656, 9727, 15344, 16303, 16898, 18632, 19312, 19454, 32606, 33796, 37264, 38908, 65212, 67592, 68089, 77816, 130424, 135184, 136178, 155632, 165359, 260848, 272356, 330718, 544712, 661436, 1089424, 1157513, 1322872, 2315026, 2645744, 4630052, 9260104, 18520208]

約数ペア:

[(1, 18520208), (2, 9260104), (4, 4630052), (7, 2645744), (8, 2315026), (14, 1322872), (16, 1157513), (17, 1089424), (28, 661436), (34, 544712), (56, 330718), (68, 272356), (71, 260848), (112, 165359), (119, 155632), (136, 136178), (137, 135184), (142, 130424), (238, 77816), (272, 68089), (274, 67592), (284, 65212), (476, 38908), (497, 37264), (548, 33796), (568, 32606), (952, 19454), (959, 19312), (994, 18632), (1096, 16898), (1136, 16303), (1207, 15344), (1904, 9727), (1918, 9656), (1988, 9316), (2192, 8449), (2329, 7952), (2414, 7672), (3836, 4828), (3976, 4658)]