19474280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 50509440

約数和(自身を除く): 31035160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 157, 280, 314, 443, 628, 785, 886, 1099, 1256, 1570, 1772, 2198, 2215, 3101, 3140, 3544, 4396, 4430, 5495, 6202, 6280, 8792, 8860, 10990, 12404, 15505, 17720, 21980, 24808, 31010, 43960, 62020, 69551, 124040, 139102, 278204, 347755, 486857, 556408, 695510, 973714, 1391020, 1947428, 2434285, 2782040, 3894856, 4868570, 9737140, 19474280]

約数ペア:

[(1, 19474280), (2, 9737140), (4, 4868570), (5, 3894856), (7, 2782040), (8, 2434285), (10, 1947428), (14, 1391020), (20, 973714), (28, 695510), (35, 556408), (40, 486857), (56, 347755), (70, 278204), (140, 139102), (157, 124040), (280, 69551), (314, 62020), (443, 43960), (628, 31010), (785, 24808), (886, 21980), (1099, 17720), (1256, 15505), (1570, 12404), (1772, 10990), (2198, 8860), (2215, 8792), (3101, 6280), (3140, 6202), (3544, 5495), (4396, 4430)]