40209920

素因数分解:

$2^9\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:275

約数の個数: 80

約数和(自身を含む): 97962480

約数和(自身を除く): 57752560

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, 1112, 1130, 1280, 1390, 1808, 2224, 2260, 2560, 2780, 3616, 4448, 4520, 5560, 7232, 8896, 9040, 11120, 14464, 15707, 17792, 18080, 22240, 28928, 31414, 35584, 36160, 44480, 57856, 62828, 71168, 72320, 78535, 88960, 125656, 144640, 157070, 177920, 251312, 289280, 314140, 355840, 502624, 628280, 1005248, 1256560, 2010496, 2513120, 4020992, 5026240, 8041984, 10052480, 20104960, 40209920]

約数ペア:

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