20123231408

素因数分解:

$2^4\times 7^2\times {\mathrm{389}}^1\times {\mathrm{65983}}^1$

素因数の和:66394

約数の個数: 60

約数和(自身を含む): 45471553920

約数和(自身を除く): 25348322512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 389, 392, 778, 784, 1556, 2723, 3112, 5446, 6224, 10892, 19061, 21784, 38122, 43568, 65983, 76244, 131966, 152488, 263932, 304976, 461881, 527864, 923762, 1055728, 1847524, 3233167, 3695048, 6466334, 7390096, 12932668, 25667387, 25865336, 51334774, 51730672, 102669548, 179671709, 205339096, 359343418, 410678192, 718686836, 1257701963, 1437373672, 2515403926, 2874747344, 5030807852, 10061615704, 20123231408]

約数ペア:

[(1, 20123231408), (2, 10061615704), (4, 5030807852), (7, 2874747344), (8, 2515403926), (14, 1437373672), (16, 1257701963), (28, 718686836), (49, 410678192), (56, 359343418), (98, 205339096), (112, 179671709), (196, 102669548), (389, 51730672), (392, 51334774), (778, 25865336), (784, 25667387), (1556, 12932668), (2723, 7390096), (3112, 6466334), (5446, 3695048), (6224, 3233167), (10892, 1847524), (19061, 1055728), (21784, 923762), (38122, 527864), (43568, 461881), (65983, 304976), (76244, 263932), (131966, 152488)]