21447680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 88

約数和(自身を含む): 53058240

約数和(自身を除く): 31610560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 71, 80, 118, 128, 142, 160, 236, 256, 284, 295, 320, 355, 472, 512, 568, 590, 640, 710, 944, 1024, 1136, 1180, 1280, 1420, 1888, 2272, 2360, 2560, 2840, 3776, 4189, 4544, 4720, 5120, 5680, 7552, 8378, 9088, 9440, 11360, 15104, 16756, 18176, 18880, 20945, 22720, 30208, 33512, 36352, 37760, 41890, 45440, 60416, 67024, 72704, 75520, 83780, 90880, 134048, 151040, 167560, 181760, 268096, 302080, 335120, 363520, 536192, 670240, 1072384, 1340480, 2144768, 2680960, 4289536, 5361920, 10723840, 21447680]

約数ペア:

[(1, 21447680), (2, 10723840), (4, 5361920), (5, 4289536), (8, 2680960), (10, 2144768), (16, 1340480), (20, 1072384), (32, 670240), (40, 536192), (59, 363520), (64, 335120), (71, 302080), (80, 268096), (118, 181760), (128, 167560), (142, 151040), (160, 134048), (236, 90880), (256, 83780), (284, 75520), (295, 72704), (320, 67024), (355, 60416), (472, 45440), (512, 41890), (568, 37760), (590, 36352), (640, 33512), (710, 30208), (944, 22720), (1024, 20945), (1136, 18880), (1180, 18176), (1280, 16756), (1420, 15104), (1888, 11360), (2272, 9440), (2360, 9088), (2560, 8378), (2840, 7552), (3776, 5680), (4189, 5120), (4544, 4720)]