128920816

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{4261}}^1$

素因数の和:4361

約数の個数: 40

約数和(自身を含む): 262130048

約数和(自身を除く): 133209232

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 488, 496, 976, 1891, 3782, 4261, 7564, 8522, 15128, 17044, 30256, 34088, 68176, 132091, 259921, 264182, 519842, 528364, 1039684, 1056728, 2079368, 2113456, 4158736, 8057551, 16115102, 32230204, 64460408, 128920816]

約数ペア:

[(1, 128920816), (2, 64460408), (4, 32230204), (8, 16115102), (16, 8057551), (31, 4158736), (61, 2113456), (62, 2079368), (122, 1056728), (124, 1039684), (244, 528364), (248, 519842), (488, 264182), (496, 259921), (976, 132091), (1891, 68176), (3782, 34088), (4261, 30256), (7564, 17044), (8522, 15128)]