27921920

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:875

約数の個数: 80

約数和(自身を含む): 72182880

約数和(自身を除く): 44260960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 839, 1040, 1280, 1664, 1678, 2080, 2560, 3328, 3356, 4160, 4195, 6656, 6712, 8320, 8390, 10907, 13424, 16640, 16780, 21814, 26848, 33280, 33560, 43628, 53696, 54535, 67120, 87256, 107392, 109070, 134240, 174512, 214784, 218140, 268480, 349024, 429568, 436280, 536960, 698048, 872560, 1073920, 1396096, 1745120, 2147840, 2792192, 3490240, 5584384, 6980480, 13960960, 27921920]

約数ペア:

[(1, 27921920), (2, 13960960), (4, 6980480), (5, 5584384), (8, 3490240), (10, 2792192), (13, 2147840), (16, 1745120), (20, 1396096), (26, 1073920), (32, 872560), (40, 698048), (52, 536960), (64, 436280), (65, 429568), (80, 349024), (104, 268480), (128, 218140), (130, 214784), (160, 174512), (208, 134240), (256, 109070), (260, 107392), (320, 87256), (416, 67120), (512, 54535), (520, 53696), (640, 43628), (832, 33560), (839, 33280), (1040, 26848), (1280, 21814), (1664, 16780), (1678, 16640), (2080, 13424), (2560, 10907), (3328, 8390), (3356, 8320), (4160, 6712), (4195, 6656)]