20201248

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 21046112

約数列:

[1, 2, 4, 8, 16, 32, 61, 79, 122, 131, 158, 244, 262, 316, 488, 524, 632, 976, 1048, 1264, 1952, 2096, 2528, 4192, 4819, 7991, 9638, 10349, 15982, 19276, 20698, 31964, 38552, 41396, 63928, 77104, 82792, 127856, 154208, 165584, 255712, 331168, 631289, 1262578, 2525156, 5050312, 10100624, 20201248]

約数ペア:

[(1, 20201248), (2, 10100624), (4, 5050312), (8, 2525156), (16, 1262578), (32, 631289), (61, 331168), (79, 255712), (122, 165584), (131, 154208), (158, 127856), (244, 82792), (262, 77104), (316, 63928), (488, 41396), (524, 38552), (632, 31964), (976, 20698), (1048, 19276), (1264, 15982), (1952, 10349), (2096, 9638), (2528, 7991), (4192, 4819)]