21739850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 46657728

約数和(自身を除く): 24917878

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 47, 50, 55, 58, 94, 110, 145, 235, 275, 290, 319, 470, 517, 550, 638, 725, 841, 1034, 1175, 1363, 1450, 1595, 1682, 2350, 2585, 2726, 3190, 4205, 5170, 6815, 7975, 8410, 9251, 12925, 13630, 14993, 15950, 18502, 21025, 25850, 29986, 34075, 39527, 42050, 46255, 68150, 74965, 79054, 92510, 149930, 197635, 231275, 374825, 395270, 434797, 462550, 749650, 869594, 988175, 1976350, 2173985, 4347970, 10869925, 21739850]

約数ペア:

[(1, 21739850), (2, 10869925), (5, 4347970), (10, 2173985), (11, 1976350), (22, 988175), (25, 869594), (29, 749650), (47, 462550), (50, 434797), (55, 395270), (58, 374825), (94, 231275), (110, 197635), (145, 149930), (235, 92510), (275, 79054), (290, 74965), (319, 68150), (470, 46255), (517, 42050), (550, 39527), (638, 34075), (725, 29986), (841, 25850), (1034, 21025), (1175, 18502), (1363, 15950), (1450, 14993), (1595, 13630), (1682, 12925), (2350, 9251), (2585, 8410), (2726, 7975), (3190, 6815), (4205, 5170)]