81210728

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{229}}^1\times {\mathrm{457}}^1$

素因数の和:789

約数の個数: 32

約数和(自身を含む): 154849800

約数和(自身を除く): 73639072

約数列:

[1, 2, 4, 8, 97, 194, 229, 388, 457, 458, 776, 914, 916, 1828, 1832, 3656, 22213, 44329, 44426, 88658, 88852, 104653, 177316, 177704, 209306, 354632, 418612, 837224, 10151341, 20302682, 40605364, 81210728]

約数ペア:

[(1, 81210728), (2, 40605364), (4, 20302682), (8, 10151341), (97, 837224), (194, 418612), (229, 354632), (388, 209306), (457, 177704), (458, 177316), (776, 104653), (914, 88852), (916, 88658), (1828, 44426), (1832, 44329), (3656, 22213)]