129411256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{20399}}^1$

素因数の和:20479

約数の個数: 32

約数和(自身を含む): 265608000

約数和(自身を除く): 136196744

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 6344, 20399, 40798, 81596, 163192, 265187, 530374, 1060748, 1244339, 2121496, 2488678, 4977356, 9954712, 16176407, 32352814, 64705628, 129411256]

約数ペア:

[(1, 129411256), (2, 64705628), (4, 32352814), (8, 16176407), (13, 9954712), (26, 4977356), (52, 2488678), (61, 2121496), (104, 1244339), (122, 1060748), (244, 530374), (488, 265187), (793, 163192), (1586, 81596), (3172, 40798), (6344, 20399)]