81397778

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{541}}^1\times {\mathrm{977}}^1$

素因数の和:1538

約数の個数: 32

約数和(自身を含む): 152661888

約数和(自身を除く): 71264110

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 541, 977, 1082, 1954, 3787, 5951, 6839, 7574, 10747, 11902, 13678, 21494, 41657, 75229, 83314, 150458, 528557, 1057114, 3699899, 5814127, 7399798, 11628254, 40698889, 81397778]

約数ペア:

[(1, 81397778), (2, 40698889), (7, 11628254), (11, 7399798), (14, 5814127), (22, 3699899), (77, 1057114), (154, 528557), (541, 150458), (977, 83314), (1082, 75229), (1954, 41657), (3787, 21494), (5951, 13678), (6839, 11902), (7574, 10747)]