18666368

素因数分解:

$2^7\times 7^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 24516352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 83, 112, 128, 166, 224, 251, 332, 448, 502, 581, 664, 896, 1004, 1162, 1328, 1757, 2008, 2324, 2656, 3514, 4016, 4648, 5312, 7028, 8032, 9296, 10624, 14056, 16064, 18592, 20833, 28112, 32128, 37184, 41666, 56224, 74368, 83332, 112448, 145831, 166664, 224896, 291662, 333328, 583324, 666656, 1166648, 1333312, 2333296, 2666624, 4666592, 9333184, 18666368]

約数ペア:

[(1, 18666368), (2, 9333184), (4, 4666592), (7, 2666624), (8, 2333296), (14, 1333312), (16, 1166648), (28, 666656), (32, 583324), (56, 333328), (64, 291662), (83, 224896), (112, 166664), (128, 145831), (166, 112448), (224, 83332), (251, 74368), (332, 56224), (448, 41666), (502, 37184), (581, 32128), (664, 28112), (896, 20833), (1004, 18592), (1162, 16064), (1328, 14056), (1757, 10624), (2008, 9296), (2324, 8032), (2656, 7028), (3514, 5312), (4016, 4648)]