20981136

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 39015024

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 79, 88, 132, 158, 176, 237, 264, 316, 474, 503, 528, 632, 869, 948, 1006, 1264, 1509, 1738, 1896, 2012, 2607, 3018, 3476, 3792, 4024, 5214, 5533, 6036, 6952, 8048, 10428, 11066, 12072, 13904, 16599, 20856, 22132, 24144, 33198, 39737, 41712, 44264, 66396, 79474, 88528, 119211, 132792, 158948, 238422, 265584, 317896, 437107, 476844, 635792, 874214, 953688, 1311321, 1748428, 1907376, 2622642, 3496856, 5245284, 6993712, 10490568, 20981136]

約数ペア:

[(1, 20981136), (2, 10490568), (3, 6993712), (4, 5245284), (6, 3496856), (8, 2622642), (11, 1907376), (12, 1748428), (16, 1311321), (22, 953688), (24, 874214), (33, 635792), (44, 476844), (48, 437107), (66, 317896), (79, 265584), (88, 238422), (132, 158948), (158, 132792), (176, 119211), (237, 88528), (264, 79474), (316, 66396), (474, 44264), (503, 41712), (528, 39737), (632, 33198), (869, 24144), (948, 22132), (1006, 20856), (1264, 16599), (1509, 13904), (1738, 12072), (1896, 11066), (2012, 10428), (2607, 8048), (3018, 6952), (3476, 6036), (3792, 5533), (4024, 5214)]