21670336

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:353

約数の個数: 56

約数和(自身を含む): 46085760

約数和(自身を除く): 24415424

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 71, 76, 142, 152, 251, 284, 304, 502, 568, 608, 1004, 1136, 1216, 1349, 2008, 2272, 2698, 4016, 4544, 4769, 5396, 8032, 9538, 10792, 16064, 17821, 19076, 21584, 35642, 38152, 43168, 71284, 76304, 86336, 142568, 152608, 285136, 305216, 338599, 570272, 677198, 1140544, 1354396, 2708792, 5417584, 10835168, 21670336]

約数ペア:

[(1, 21670336), (2, 10835168), (4, 5417584), (8, 2708792), (16, 1354396), (19, 1140544), (32, 677198), (38, 570272), (64, 338599), (71, 305216), (76, 285136), (142, 152608), (152, 142568), (251, 86336), (284, 76304), (304, 71284), (502, 43168), (568, 38152), (608, 35642), (1004, 21584), (1136, 19076), (1216, 17821), (1349, 16064), (2008, 10792), (2272, 9538), (2698, 8032), (4016, 5396), (4544, 4769)]