21442640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14107}}^1$

素因数の和:14139

約数の個数: 40

約数和(自身を含む): 52481760

約数和(自身を除く): 31039120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14107, 28214, 56428, 70535, 112856, 141070, 225712, 268033, 282140, 536066, 564280, 1072132, 1128560, 1340165, 2144264, 2680330, 4288528, 5360660, 10721320, 21442640]

約数ペア:

[(1, 21442640), (2, 10721320), (4, 5360660), (5, 4288528), (8, 2680330), (10, 2144264), (16, 1340165), (19, 1128560), (20, 1072132), (38, 564280), (40, 536066), (76, 282140), (80, 268033), (95, 225712), (152, 141070), (190, 112856), (304, 70535), (380, 56428), (760, 28214), (1520, 14107)]