20801120

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4483}}^1$

素因数の和:4527

約数の個数: 48

約数和(自身を含む): 50848560

約数和(自身を除く): 30047440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4483, 4640, 8966, 17932, 22415, 35864, 44830, 71728, 89660, 130007, 143456, 179320, 260014, 358640, 520028, 650035, 717280, 1040056, 1300070, 2080112, 2600140, 4160224, 5200280, 10400560, 20801120]

約数ペア:

[(1, 20801120), (2, 10400560), (4, 5200280), (5, 4160224), (8, 2600140), (10, 2080112), (16, 1300070), (20, 1040056), (29, 717280), (32, 650035), (40, 520028), (58, 358640), (80, 260014), (116, 179320), (145, 143456), (160, 130007), (232, 89660), (290, 71728), (464, 44830), (580, 35864), (928, 22415), (1160, 17932), (2320, 8966), (4483, 4640)]