21313136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5393}}^1$

素因数の和:5433

約数の個数: 40

約数和(自身を含む): 46819920

約数和(自身を除く): 25506784

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5393, 10786, 21572, 43144, 70109, 86288, 102467, 140218, 204934, 280436, 409868, 560872, 819736, 1121744, 1332071, 1639472, 2664142, 5328284, 10656568, 21313136]

約数ペア:

[(1, 21313136), (2, 10656568), (4, 5328284), (8, 2664142), (13, 1639472), (16, 1332071), (19, 1121744), (26, 819736), (38, 560872), (52, 409868), (76, 280436), (104, 204934), (152, 140218), (208, 102467), (247, 86288), (304, 70109), (494, 43144), (988, 21572), (1976, 10786), (3952, 5393)]