20435488

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 44645580

約数和(自身を除く): 24210092

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 38, 58, 61, 76, 116, 122, 152, 232, 244, 304, 361, 464, 488, 551, 608, 722, 928, 976, 1102, 1159, 1444, 1769, 1952, 2204, 2318, 2888, 3538, 4408, 4636, 5776, 7076, 8816, 9272, 10469, 11552, 14152, 17632, 18544, 20938, 22021, 28304, 33611, 37088, 41876, 44042, 56608, 67222, 83752, 88084, 134444, 167504, 176168, 268888, 335008, 352336, 537776, 638609, 704672, 1075552, 1277218, 2554436, 5108872, 10217744, 20435488]

約数ペア:

[(1, 20435488), (2, 10217744), (4, 5108872), (8, 2554436), (16, 1277218), (19, 1075552), (29, 704672), (32, 638609), (38, 537776), (58, 352336), (61, 335008), (76, 268888), (116, 176168), (122, 167504), (152, 134444), (232, 88084), (244, 83752), (304, 67222), (361, 56608), (464, 44042), (488, 41876), (551, 37088), (608, 33611), (722, 28304), (928, 22021), (976, 20938), (1102, 18544), (1159, 17632), (1444, 14152), (1769, 11552), (1952, 10469), (2204, 9272), (2318, 8816), (2888, 7076), (3538, 5776), (4408, 4636)]