80419840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:277

約数の個数: 88

約数和(自身を含む): 196020720

約数和(自身を除く): 115600880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 128, 139, 160, 226, 256, 278, 320, 452, 512, 556, 565, 640, 695, 904, 1024, 1112, 1130, 1280, 1390, 1808, 2224, 2260, 2560, 2780, 3616, 4448, 4520, 5120, 5560, 7232, 8896, 9040, 11120, 14464, 15707, 17792, 18080, 22240, 28928, 31414, 35584, 36160, 44480, 57856, 62828, 71168, 72320, 78535, 88960, 115712, 125656, 142336, 144640, 157070, 177920, 251312, 289280, 314140, 355840, 502624, 578560, 628280, 711680, 1005248, 1256560, 2010496, 2513120, 4020992, 5026240, 8041984, 10052480, 16083968, 20104960, 40209920, 80419840]

約数ペア:

[(1, 80419840), (2, 40209920), (4, 20104960), (5, 16083968), (8, 10052480), (10, 8041984), (16, 5026240), (20, 4020992), (32, 2513120), (40, 2010496), (64, 1256560), (80, 1005248), (113, 711680), (128, 628280), (139, 578560), (160, 502624), (226, 355840), (256, 314140), (278, 289280), (320, 251312), (452, 177920), (512, 157070), (556, 144640), (565, 142336), (640, 125656), (695, 115712), (904, 88960), (1024, 78535), (1112, 72320), (1130, 71168), (1280, 62828), (1390, 57856), (1808, 44480), (2224, 36160), (2260, 35584), (2560, 31414), (2780, 28928), (3616, 22240), (4448, 18080), (4520, 17792), (5120, 15707), (5560, 14464), (7232, 11120), (8896, 9040)]