21338044

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 48267744

約数和(自身を除く): 26929700

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 52, 61, 62, 91, 122, 124, 182, 217, 244, 364, 403, 427, 434, 793, 806, 854, 868, 961, 1586, 1612, 1708, 1891, 1922, 2821, 3172, 3782, 3844, 5551, 5642, 6727, 7564, 11102, 11284, 12493, 13237, 13454, 22204, 24583, 24986, 26474, 26908, 49166, 49972, 52948, 58621, 87451, 98332, 117242, 172081, 174902, 234484, 344162, 349804, 410347, 688324, 762073, 820694, 1524146, 1641388, 3048292, 5334511, 10669022, 21338044]

約数ペア:

[(1, 21338044), (2, 10669022), (4, 5334511), (7, 3048292), (13, 1641388), (14, 1524146), (26, 820694), (28, 762073), (31, 688324), (52, 410347), (61, 349804), (62, 344162), (91, 234484), (122, 174902), (124, 172081), (182, 117242), (217, 98332), (244, 87451), (364, 58621), (403, 52948), (427, 49972), (434, 49166), (793, 26908), (806, 26474), (854, 24986), (868, 24583), (961, 22204), (1586, 13454), (1612, 13237), (1708, 12493), (1891, 11284), (1922, 11102), (2821, 7564), (3172, 6727), (3782, 5642), (3844, 5551)]