128528994

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{21881}}^1$

素因数の和:21986

約数の個数: 32

約数和(自身を含む): 283590720

約数和(自身を除く): 155061726

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 89, 178, 267, 534, 979, 1958, 2937, 5874, 21881, 43762, 65643, 131286, 240691, 481382, 722073, 1444146, 1947409, 3894818, 5842227, 11684454, 21421499, 42842998, 64264497, 128528994]

約数ペア:

[(1, 128528994), (2, 64264497), (3, 42842998), (6, 21421499), (11, 11684454), (22, 5842227), (33, 3894818), (66, 1947409), (89, 1444146), (178, 722073), (267, 481382), (534, 240691), (979, 131286), (1958, 65643), (2937, 43762), (5874, 21881)]