399304

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:133

約数の個数: 32

約数和(自身を含む): 820800

約数和(自身を除く): 421496

約数列:

[1, 2, 4, 8, 19, 37, 38, 71, 74, 76, 142, 148, 152, 284, 296, 568, 703, 1349, 1406, 2627, 2698, 2812, 5254, 5396, 5624, 10508, 10792, 21016, 49913, 99826, 199652, 399304]

約数ペア:

[(1, 399304), (2, 199652), (4, 99826), (8, 49913), (19, 21016), (37, 10792), (38, 10508), (71, 5624), (74, 5396), (76, 5254), (142, 2812), (148, 2698), (152, 2627), (284, 1406), (296, 1349), (568, 703)]