20344960

素因数分解:

$2^7\times 5^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:485

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 29006720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 320, 332, 383, 415, 640, 664, 766, 830, 1328, 1532, 1660, 1915, 2656, 3064, 3320, 3830, 5312, 6128, 6640, 7660, 10624, 12256, 13280, 15320, 24512, 26560, 30640, 31789, 49024, 53120, 61280, 63578, 122560, 127156, 158945, 245120, 254312, 317890, 508624, 635780, 1017248, 1271560, 2034496, 2543120, 4068992, 5086240, 10172480, 20344960]

約数ペア:

[(1, 20344960), (2, 10172480), (4, 5086240), (5, 4068992), (8, 2543120), (10, 2034496), (16, 1271560), (20, 1017248), (32, 635780), (40, 508624), (64, 317890), (80, 254312), (83, 245120), (128, 158945), (160, 127156), (166, 122560), (320, 63578), (332, 61280), (383, 53120), (415, 49024), (640, 31789), (664, 30640), (766, 26560), (830, 24512), (1328, 15320), (1532, 13280), (1660, 12256), (1915, 10624), (2656, 7660), (3064, 6640), (3320, 6128), (3830, 5312)]