161609984

素因数分解:

$2^8\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 334561920

約数和(自身を除く): 172951936

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 79, 122, 128, 131, 158, 244, 256, 262, 316, 488, 524, 632, 976, 1048, 1264, 1952, 2096, 2528, 3904, 4192, 4819, 5056, 7808, 7991, 8384, 9638, 10112, 10349, 15616, 15982, 16768, 19276, 20224, 20698, 31964, 33536, 38552, 41396, 63928, 77104, 82792, 127856, 154208, 165584, 255712, 308416, 331168, 511424, 616832, 631289, 662336, 1022848, 1233664, 1262578, 1324672, 2045696, 2525156, 2649344, 5050312, 10100624, 20201248, 40402496, 80804992, 161609984]

約数ペア:

[(1, 161609984), (2, 80804992), (4, 40402496), (8, 20201248), (16, 10100624), (32, 5050312), (61, 2649344), (64, 2525156), (79, 2045696), (122, 1324672), (128, 1262578), (131, 1233664), (158, 1022848), (244, 662336), (256, 631289), (262, 616832), (316, 511424), (488, 331168), (524, 308416), (632, 255712), (976, 165584), (1048, 154208), (1264, 127856), (1952, 82792), (2096, 77104), (2528, 63928), (3904, 41396), (4192, 38552), (4819, 33536), (5056, 31964), (7808, 20698), (7991, 20224), (8384, 19276), (9638, 16768), (10112, 15982), (10349, 15616)]