21411328

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 25728512

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 71, 76, 124, 128, 142, 152, 248, 256, 284, 304, 496, 512, 568, 589, 608, 992, 1136, 1178, 1216, 1349, 1984, 2201, 2272, 2356, 2432, 2698, 3968, 4402, 4544, 4712, 4864, 5396, 7936, 8804, 9088, 9424, 9728, 10792, 15872, 17608, 18176, 18848, 21584, 35216, 36352, 37696, 41819, 43168, 70432, 75392, 83638, 86336, 140864, 150784, 167276, 172672, 281728, 301568, 334552, 345344, 563456, 669104, 690688, 1126912, 1338208, 2676416, 5352832, 10705664, 21411328]

約数ペア:

[(1, 21411328), (2, 10705664), (4, 5352832), (8, 2676416), (16, 1338208), (19, 1126912), (31, 690688), (32, 669104), (38, 563456), (62, 345344), (64, 334552), (71, 301568), (76, 281728), (124, 172672), (128, 167276), (142, 150784), (152, 140864), (248, 86336), (256, 83638), (284, 75392), (304, 70432), (496, 43168), (512, 41819), (568, 37696), (589, 36352), (608, 35216), (992, 21584), (1136, 18848), (1178, 18176), (1216, 17608), (1349, 15872), (1984, 10792), (2201, 9728), (2272, 9424), (2356, 9088), (2432, 8804), (2698, 7936), (3968, 5396), (4402, 4864), (4544, 4712)]