81938128

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{2269}}^1$

素因数の和:2375

約数の個数: 40

約数和(自身を含む): 165791720

約数和(自身を除く): 83853592

約数列:

[1, 2, 4, 8, 16, 37, 61, 74, 122, 148, 244, 296, 488, 592, 976, 2257, 2269, 4514, 4538, 9028, 9076, 18056, 18152, 36112, 36304, 83953, 138409, 167906, 276818, 335812, 553636, 671624, 1107272, 1343248, 2214544, 5121133, 10242266, 20484532, 40969064, 81938128]

約数ペア:

[(1, 81938128), (2, 40969064), (4, 20484532), (8, 10242266), (16, 5121133), (37, 2214544), (61, 1343248), (74, 1107272), (122, 671624), (148, 553636), (244, 335812), (296, 276818), (488, 167906), (592, 138409), (976, 83953), (2257, 36304), (2269, 36112), (4514, 18152), (4538, 18056), (9028, 9076)]