20972560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2203}}^1$

素因数の和:2240

約数の個数: 80

約数和(自身を含む): 59031936

約数和(自身を除く): 38059376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2203, 2380, 4406, 4760, 8812, 9520, 11015, 15421, 17624, 22030, 30842, 35248, 37451, 44060, 61684, 74902, 77105, 88120, 123368, 149804, 154210, 176240, 187255, 246736, 262157, 299608, 308420, 374510, 524314, 599216, 616840, 749020, 1048628, 1233680, 1310785, 1498040, 2097256, 2621570, 2996080, 4194512, 5243140, 10486280, 20972560]

約数ペア:

[(1, 20972560), (2, 10486280), (4, 5243140), (5, 4194512), (7, 2996080), (8, 2621570), (10, 2097256), (14, 1498040), (16, 1310785), (17, 1233680), (20, 1048628), (28, 749020), (34, 616840), (35, 599216), (40, 524314), (56, 374510), (68, 308420), (70, 299608), (80, 262157), (85, 246736), (112, 187255), (119, 176240), (136, 154210), (140, 149804), (170, 123368), (238, 88120), (272, 77105), (280, 74902), (340, 61684), (476, 44060), (560, 37451), (595, 35248), (680, 30842), (952, 22030), (1190, 17624), (1360, 15421), (1904, 11015), (2203, 9520), (2380, 8812), (4406, 4760)]