19581140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 43206912

約数和(自身を除く): 23625772

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 74, 94, 148, 185, 188, 235, 370, 470, 563, 740, 940, 1126, 1739, 2252, 2815, 3478, 5630, 6956, 8695, 11260, 17390, 20831, 26461, 34780, 41662, 52922, 83324, 104155, 105844, 132305, 208310, 264610, 416620, 529220, 979057, 1958114, 3916228, 4895285, 9790570, 19581140]

約数ペア:

[(1, 19581140), (2, 9790570), (4, 4895285), (5, 3916228), (10, 1958114), (20, 979057), (37, 529220), (47, 416620), (74, 264610), (94, 208310), (148, 132305), (185, 105844), (188, 104155), (235, 83324), (370, 52922), (470, 41662), (563, 34780), (740, 26461), (940, 20831), (1126, 17390), (1739, 11260), (2252, 8695), (2815, 6956), (3478, 5630)]