21549920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 96

約数和(自身を含む): 59222016

約数和(自身を除く): 37672096

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 71, 80, 112, 140, 142, 160, 224, 271, 280, 284, 355, 497, 542, 560, 568, 710, 994, 1084, 1120, 1136, 1355, 1420, 1897, 1988, 2168, 2272, 2485, 2710, 2840, 3794, 3976, 4336, 4970, 5420, 5680, 7588, 7952, 8672, 9485, 9940, 10840, 11360, 15176, 15904, 18970, 19241, 19880, 21680, 30352, 37940, 38482, 39760, 43360, 60704, 75880, 76964, 79520, 96205, 134687, 151760, 153928, 192410, 269374, 303520, 307856, 384820, 538748, 615712, 673435, 769640, 1077496, 1346870, 1539280, 2154992, 2693740, 3078560, 4309984, 5387480, 10774960, 21549920]

約数ペア:

[(1, 21549920), (2, 10774960), (4, 5387480), (5, 4309984), (7, 3078560), (8, 2693740), (10, 2154992), (14, 1539280), (16, 1346870), (20, 1077496), (28, 769640), (32, 673435), (35, 615712), (40, 538748), (56, 384820), (70, 307856), (71, 303520), (80, 269374), (112, 192410), (140, 153928), (142, 151760), (160, 134687), (224, 96205), (271, 79520), (280, 76964), (284, 75880), (355, 60704), (497, 43360), (542, 39760), (560, 38482), (568, 37940), (710, 30352), (994, 21680), (1084, 19880), (1120, 19241), (1136, 18970), (1355, 15904), (1420, 15176), (1897, 11360), (1988, 10840), (2168, 9940), (2272, 9485), (2485, 8672), (2710, 7952), (2840, 7588), (3794, 5680), (3976, 5420), (4336, 4970)]