256863999

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{4159}}^1$

素因数の和:4359

約数の個数: 32

約数和(自身を含む): 416931840

約数和(自身を除く): 160067841

約数列:

[1, 3, 7, 17, 21, 51, 119, 173, 357, 519, 1211, 2941, 3633, 4159, 8823, 12477, 20587, 29113, 61761, 70703, 87339, 212109, 494921, 719507, 1484763, 2158521, 5036549, 12231619, 15109647, 36694857, 85621333, 256863999]

約数ペア:

[(1, 256863999), (3, 85621333), (7, 36694857), (17, 15109647), (21, 12231619), (51, 5036549), (119, 2158521), (173, 1484763), (357, 719507), (519, 494921), (1211, 212109), (2941, 87339), (3633, 70703), (4159, 61761), (8823, 29113), (12477, 20587)]