20820608

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23243392

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 71, 79, 116, 128, 142, 158, 232, 284, 316, 464, 568, 632, 928, 1136, 1264, 1856, 2059, 2272, 2291, 2528, 3712, 4118, 4544, 4582, 5056, 5609, 8236, 9088, 9164, 10112, 11218, 16472, 18328, 22436, 32944, 36656, 44872, 65888, 73312, 89744, 131776, 146624, 162661, 179488, 263552, 293248, 325322, 358976, 650644, 717952, 1301288, 2602576, 5205152, 10410304, 20820608]

約数ペア:

[(1, 20820608), (2, 10410304), (4, 5205152), (8, 2602576), (16, 1301288), (29, 717952), (32, 650644), (58, 358976), (64, 325322), (71, 293248), (79, 263552), (116, 179488), (128, 162661), (142, 146624), (158, 131776), (232, 89744), (284, 73312), (316, 65888), (464, 44872), (568, 36656), (632, 32944), (928, 22436), (1136, 18328), (1264, 16472), (1856, 11218), (2059, 10112), (2272, 9164), (2291, 9088), (2528, 8236), (3712, 5609), (4118, 5056), (4544, 4582)]