20161681792

素因数分解:

$2^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{725867}}^1$

素因数の和:725919

約数の個数: 64

約数和(自身を含む): 47384663040

約数和(自身を除く): 27222981248

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 434, 448, 496, 868, 896, 992, 1736, 1984, 3472, 3968, 6944, 13888, 27776, 725867, 1451734, 2903468, 5081069, 5806936, 10162138, 11613872, 20324276, 22501877, 23227744, 40648552, 45003754, 46455488, 81297104, 90007508, 92910976, 157513139, 162594208, 180015016, 315026278, 325188416, 360030032, 630052556, 650376832, 720060064, 1260105112, 1440120128, 2520210224, 2880240256, 5040420448, 10080840896, 20161681792]

約数ペア:

[(1, 20161681792), (2, 10080840896), (4, 5040420448), (7, 2880240256), (8, 2520210224), (14, 1440120128), (16, 1260105112), (28, 720060064), (31, 650376832), (32, 630052556), (56, 360030032), (62, 325188416), (64, 315026278), (112, 180015016), (124, 162594208), (128, 157513139), (217, 92910976), (224, 90007508), (248, 81297104), (434, 46455488), (448, 45003754), (496, 40648552), (868, 23227744), (896, 22501877), (992, 20324276), (1736, 11613872), (1984, 10162138), (3472, 5806936), (3968, 5081069), (6944, 2903468), (13888, 1451734), (27776, 725867)]