81955840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{16007}}^1$

素因数の和:16032

約数の個数: 44

約数和(自身を含む): 196610256

約数和(自身を除く): 114654416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 16007, 32014, 64028, 80035, 128056, 160070, 256112, 320140, 512224, 640280, 1024448, 1280560, 2048896, 2561120, 4097792, 5122240, 8195584, 10244480, 16391168, 20488960, 40977920, 81955840]

約数ペア:

[(1, 81955840), (2, 40977920), (4, 20488960), (5, 16391168), (8, 10244480), (10, 8195584), (16, 5122240), (20, 4097792), (32, 2561120), (40, 2048896), (64, 1280560), (80, 1024448), (128, 640280), (160, 512224), (256, 320140), (320, 256112), (512, 160070), (640, 128056), (1024, 80035), (1280, 64028), (2560, 32014), (5120, 16007)]