21127769478

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16531901}}^1$

素因数の和:16531980

約数の個数: 24

約数和(自身を含む): 46421580816

約数和(自身を除く): 25293811338

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16531901, 33063802, 49595703, 99191406, 148787109, 297574218, 1173764971, 2347529942, 3521294913, 7042589826, 10563884739, 21127769478]

約数ペア:

[(1, 21127769478), (2, 10563884739), (3, 7042589826), (6, 3521294913), (9, 2347529942), (18, 1173764971), (71, 297574218), (142, 148787109), (213, 99191406), (426, 49595703), (639, 33063802), (1278, 16531901)]