19651940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1823}}^1$

素因数の和:1857

約数の個数: 72

約数和(自身を含む): 52399872

約数和(自身を除く): 32747932

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1823, 2156, 2695, 3646, 5390, 7292, 9115, 10780, 12761, 18230, 20053, 25522, 36460, 40106, 51044, 63805, 80212, 89327, 100265, 127610, 140371, 178654, 200530, 255220, 280742, 357308, 401060, 446635, 561484, 701855, 893270, 982597, 1403710, 1786540, 1965194, 2807420, 3930388, 4912985, 9825970, 19651940]

約数ペア:

[(1, 19651940), (2, 9825970), (4, 4912985), (5, 3930388), (7, 2807420), (10, 1965194), (11, 1786540), (14, 1403710), (20, 982597), (22, 893270), (28, 701855), (35, 561484), (44, 446635), (49, 401060), (55, 357308), (70, 280742), (77, 255220), (98, 200530), (110, 178654), (140, 140371), (154, 127610), (196, 100265), (220, 89327), (245, 80212), (308, 63805), (385, 51044), (490, 40106), (539, 36460), (770, 25522), (980, 20053), (1078, 18230), (1540, 12761), (1823, 10780), (2156, 9115), (2695, 7292), (3646, 5390)]