21318304

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5009}}^1$

素因数の和:5045

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 29182496

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 5009, 10018, 20036, 35063, 40072, 70126, 80144, 95171, 140252, 160288, 190342, 280504, 380684, 561008, 666197, 761368, 1122016, 1332394, 1522736, 2664788, 3045472, 5329576, 10659152, 21318304]

約数ペア:

[(1, 21318304), (2, 10659152), (4, 5329576), (7, 3045472), (8, 2664788), (14, 1522736), (16, 1332394), (19, 1122016), (28, 761368), (32, 666197), (38, 561008), (56, 380684), (76, 280504), (112, 190342), (133, 160288), (152, 140252), (224, 95171), (266, 80144), (304, 70126), (532, 40072), (608, 35063), (1064, 20036), (2128, 10018), (4256, 5009)]