21977984

素因数分解:

$2^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1291}}^1$

素因数の和:1331

約数の個数: 64

約数和(自身を含む): 52713600

約数和(自身を除く): 30735616

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 266, 304, 448, 532, 608, 896, 1064, 1216, 1291, 2128, 2432, 2582, 4256, 5164, 8512, 9037, 10328, 17024, 18074, 20656, 24529, 36148, 41312, 49058, 72296, 82624, 98116, 144592, 165248, 171703, 196232, 289184, 343406, 392464, 578368, 686812, 784928, 1156736, 1373624, 1569856, 2747248, 3139712, 5494496, 10988992, 21977984]

約数ペア:

[(1, 21977984), (2, 10988992), (4, 5494496), (7, 3139712), (8, 2747248), (14, 1569856), (16, 1373624), (19, 1156736), (28, 784928), (32, 686812), (38, 578368), (56, 392464), (64, 343406), (76, 289184), (112, 196232), (128, 171703), (133, 165248), (152, 144592), (224, 98116), (266, 82624), (304, 72296), (448, 49058), (532, 41312), (608, 36148), (896, 24529), (1064, 20656), (1216, 18074), (1291, 17024), (2128, 10328), (2432, 9037), (2582, 8512), (4256, 5164)]