20881920

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2719}}^1$

素因数の和:2745

約数の個数: 80

約数和(自身を含む): 66781440

約数和(自身を除く): 45899520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2719, 3840, 5438, 7680, 8157, 10876, 13595, 16314, 21752, 27190, 32628, 40785, 43504, 54380, 65256, 81570, 87008, 108760, 130512, 163140, 174016, 217520, 261024, 326280, 348032, 435040, 522048, 652560, 696064, 870080, 1044096, 1305120, 1392128, 1740160, 2088192, 2610240, 3480320, 4176384, 5220480, 6960640, 10440960, 20881920]

約数ペア:

[(1, 20881920), (2, 10440960), (3, 6960640), (4, 5220480), (5, 4176384), (6, 3480320), (8, 2610240), (10, 2088192), (12, 1740160), (15, 1392128), (16, 1305120), (20, 1044096), (24, 870080), (30, 696064), (32, 652560), (40, 522048), (48, 435040), (60, 348032), (64, 326280), (80, 261024), (96, 217520), (120, 174016), (128, 163140), (160, 130512), (192, 108760), (240, 87008), (256, 81570), (320, 65256), (384, 54380), (480, 43504), (512, 40785), (640, 32628), (768, 27190), (960, 21752), (1280, 16314), (1536, 13595), (1920, 10876), (2560, 8157), (2719, 7680), (3840, 5438)]