81659968

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1609}}^1$

素因数の和:1695

約数の個数: 56

約数和(自身を含む): 177479960

約数和(自身を除く): 95819992

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 64, 104, 122, 208, 244, 416, 488, 793, 832, 976, 1586, 1609, 1952, 3172, 3218, 3904, 6344, 6436, 12688, 12872, 20917, 25376, 25744, 41834, 50752, 51488, 83668, 98149, 102976, 167336, 196298, 334672, 392596, 669344, 785192, 1275937, 1338688, 1570384, 2551874, 3140768, 5103748, 6281536, 10207496, 20414992, 40829984, 81659968]

約数ペア:

[(1, 81659968), (2, 40829984), (4, 20414992), (8, 10207496), (13, 6281536), (16, 5103748), (26, 3140768), (32, 2551874), (52, 1570384), (61, 1338688), (64, 1275937), (104, 785192), (122, 669344), (208, 392596), (244, 334672), (416, 196298), (488, 167336), (793, 102976), (832, 98149), (976, 83668), (1586, 51488), (1609, 50752), (1952, 41834), (3172, 25744), (3218, 25376), (3904, 20917), (6344, 12872), (6436, 12688)]