21441280

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2393}}^1$

素因数の和:2421

約数の個数: 72

約数和(自身を含む): 58720032

約数和(自身を除く): 37278752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 2393, 4480, 4786, 8960, 9572, 11965, 16751, 19144, 23930, 33502, 38288, 47860, 67004, 76576, 83755, 95720, 134008, 153152, 167510, 191440, 268016, 306304, 335020, 382880, 536032, 612608, 670040, 765760, 1072064, 1340080, 1531520, 2144128, 2680160, 3063040, 4288256, 5360320, 10720640, 21441280]

約数ペア:

[(1, 21441280), (2, 10720640), (4, 5360320), (5, 4288256), (7, 3063040), (8, 2680160), (10, 2144128), (14, 1531520), (16, 1340080), (20, 1072064), (28, 765760), (32, 670040), (35, 612608), (40, 536032), (56, 382880), (64, 335020), (70, 306304), (80, 268016), (112, 191440), (128, 167510), (140, 153152), (160, 134008), (224, 95720), (256, 83755), (280, 76576), (320, 67004), (448, 47860), (560, 38288), (640, 33502), (896, 23930), (1120, 19144), (1280, 16751), (1792, 11965), (2240, 9572), (2393, 8960), (4480, 4786)]