89009920

素因数分解:

$2^8\times 5^1\times {\mathrm{69539}}^1$

素因数の和:69560

約数の個数: 36

約数和(自身を含む): 213209640

約数和(自身を除く): 124199720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 69539, 139078, 278156, 347695, 556312, 695390, 1112624, 1390780, 2225248, 2781560, 4450496, 5563120, 8900992, 11126240, 17801984, 22252480, 44504960, 89009920]

約数ペア:

[(1, 89009920), (2, 44504960), (4, 22252480), (5, 17801984), (8, 11126240), (10, 8900992), (16, 5563120), (20, 4450496), (32, 2781560), (40, 2225248), (64, 1390780), (80, 1112624), (128, 695390), (160, 556312), (256, 347695), (320, 278156), (640, 139078), (1280, 69539)]